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  •   Area Total: 
    3,796,742 sq mi
      Area land: 
    3,531,905 sq mi
      Area water: 
    4.66 %
    20,310 feet: Denali is the highest point in the United States and is located in the Alaska Range in the interior of the U.S. state of Alaska. Denali is also the highest point in North America. Denali is part of the Alaska Range which stretches 600 miles along the Alaska-Canada border.

    For almost a hundred years, the U.S. government officially recognized the name of the mountain as “Mount McKinley” (named after then-presidential candidate William McKinley in 1896) from 1917 until 2015. In 2015, the officially recognized name was reverted to Denali, a name the local Koyukon people had been using for centuries.
  •   Population: 
      Population density: 
    87/sq mi - persons per square mile (33.6/km²)
      Household Income: 
    $51,660 real median
      Unemployment rate: 
    5.84 %
  •   Sales Taxes: 
    6.80 %
      Income Taxes: 
    6.25 %

The United States of America (USA) is a federal republic consisting of 50 states, a federal district, and various territories. The USA is the world's third-largest country by total area, and the third-most populous. It is one of the world's most ethnically diverse and multicultural nations, and is home to the world's largest immigrant population. The USA is a global leader in many fields, such as science, technology, economy, culture, military, and diplomacy. 

The United States is a federal republic with three separate branches of government, including a bicameral legislature. This is a liberal democracy and a market economy; ranking highly in international indicators of human rights, quality of life, income and wealth, economic competitiveness and education; and have a low perceived level of corruption. It has high levels of prison and inequality, allows the death penalty, and lacks universal healthcare. A melting pot of cultures and ethnicities, the United States has been shaped by centuries of immigration. The USA has a federal system of government, where power is shared between the national and state governments. The United States (US) also has a presidential system, where the executive branch is headed by the president, who is elected by the people through the Electoral College. The USA has a bicameral legislature, where the Congress consists of the Senate and the House of Representatives. The USA has a common law legal system, where the judicial branch is headed by the Supreme Court, which has the power to interpret the Constitution and federal laws.

It is one of the world's largest and most diverse countries in terms of geography, culture, and economy. The USA has a population of about 331 million people, making it the third most populous country after China and India. The USA is also the world's largest economy by nominal GDP and the second largest by purchasing power parity. The USA is a global leader in science, technology, innovation, education, and culture.

According to the National Bureau of Economic Research (NBER), the USA invests about 2.8% of its GDP in research and development (R&D), which is higher than the average of 2.4% among the Organization for Economic Cooperation and Development (OECD) countries. The USA also ranks first in the world in terms of the number of scientific publications and patents, as well as the quality and impact of its research output. The USA has produced many Nobel laureates and other distinguished scientists who have made significant contributions to the advancement of human knowledge and welfare.

Economy is the social science that studies how people produce, distribute, and consume goods and services. The USA has the largest and most technologically advanced economy in the world, with a nominal GDP of $22.7 trillion in 2021. The USA is also the world's largest trading nation, with exports and imports totaling $4.9 trillion in 2021. The USA has a mixed economy that combines elements of capitalism and welfare state. The USA has a high level of income inequality, with the top 10% of earners receiving 47% of the national income in 2019. Some of the main drivers of the US economy are consumer spending, business investment, government spending, and net exports.

The USA also faces some challenges and opportunities in its research, scientific and economic domains. One of the challenges is to maintain its competitiveness and leadership in the face of rising global competition, especially from emerging economies such as China and India. Another challenge is to address the social and environmental issues that arise from its scientific and technological development, such as income inequality, climate change, health care, education and security. The USA also has the opportunity to leverage its strengths and resources to foster collaboration and cooperation with other countries and regions, as well as to promote the diffusion and application of its research and innovation for the benefit of humanity.

Geographically, the United States is the third largest country in the world by land area, after Russia and Canada. It covers about 9.8 million square kilometers (3.8 million square miles), spanning from the Atlantic Ocean in the east to the Pacific Ocean in the west, and from Canada in the north to Mexico in the south. The United States also includes the state of Alaska in the northwest corner of North America, the island state of Hawaii in the Pacific Ocean, and several territories and possessions in the Caribbean and Pacific regions. The United States has a diverse topography, with mountains, plains, deserts, forests, lakes, rivers, coasts, and islands. Some of the most notable geographic features are the Rocky Mountains, the Appalachian Mountains, the Great Plains, the Mississippi River, the Grand Canyon, the Great Lakes, and the Florida Keys.

The USA has a diverse geography that ranges from temperate forests and grasslands in the east, to arid deserts and mountains in the west, to tropical islands and coral reefs in the south. The USA has many natural resources, such as coal, oil, natural gas, metals, minerals, timber, and arable land. It also has many natural hazards, such as earthquakes, volcanoes, hurricanes, tornadoes, floods, wildfires, and landslides. The USA is home to many iconic landmarks and natural wonders, such as the Statue of Liberty, the Grand Canyon, Yellowstone National Park, Mount Rushmore, Niagara Falls, and Hawaii Volcanoes National Park.

Meteorologically, the United States has a variety of climates, ranging from tropical to arctic, depending on latitude, altitude, and distance from the sea. Generally speaking, the climate becomes warmer and drier as one moves southward and westward across the mainland. The west coast has a Mediterranean climate in southern California and an oceanic climate in Oregon and Washington. The east coast has a humid subtropical climate in Florida and along the Gulf of Mexico, a humid continental climate in New England and the Midwest, and a semi-arid climate in parts of Texas. Alaska has a subarctic climate with long and cold winters and short and cool summers. Hawaii has a tropical climate with warm temperatures year-round and abundant rainfall. The United States is also prone to extreme weather events such as hurricanes, tornadoes, blizzards, droughts, floods, wildfires, and heat waves. These events are influenced by factors such as ocean currents, jet streams, air masses, and seasonal changes.

Administratively, the United States is a federal republic composed of 50 states and one federal district (Washington D.C.), which is also the capital city and 16 territories. Each state has its own constitution, government, laws, and jurisdiction over its territory. The federal government consists of three branches: the executive branch headed by the president; the legislative branch composed of two chambers of Congress (the Senate and the House of Representatives); and the judicial branch composed of the Supreme Court and lower federal courts. The federal government has authority over matters such as foreign policy, national defense, interstate commerce, taxation, immigration, and civil rights. The states have authority over matters such as education, health care.

Congress is a bicameral legislature that consists of two chambers: the House of Representatives (based on population) and the Senate (based on equal representation). Congress makes laws on various matters of national interest and oversees the executive branch. Congress also has the power to declare war, levy taxes, borrow money, regulate commerce, coin money, impeach officials, ratify treaties, and propose constitutional amendments.

The Supreme Court is the highest court in the land that interprets and applies the Constitution and federal laws. The Supreme Court consists of nine justices who are appointed by the president with the advice and consent of the Senate. The Supreme Court has the power to review the constitutionality of laws and actions of other branches of government. The Supreme Court also settles disputes between states and between federal and state governments.

Politically, the USA is a federal presidential constitutional republic that operates under a system of checks and balances among three branches of government: the executive branch (headed by the president), the legislative branch (consisting of Congress), and the judicial branch (composed of the Supreme Court and lower federal courts). The president is elected indirectly by an Electoral College based on the popular vote of each state. The president serves as both the head of state and the head of government. The president appoints a cabinet of advisors and heads of executive departments and agencies. The president also serves as the commander-in-chief of the armed forces.

The USA has a multi-party system that is dominated by two major parties: the Democratic Party and the Republican Party. These parties have different ideologies and platforms on various issues such as economic policy, social policy, foreign policy, environmental policy, health care policy, immigration policy, civil rights policy, and education policy. The USA holds regular elections at various levels of government: federal (presidential and congressional), state (gubernatorial and legislative), local (mayoral and municipal), judicial (federal and state), and special (referendums and initiatives). The USA also has many minor parties and independent candidates that participate in elections.

Ethnically, the USA is a melting pot of cultures and peoples that have shaped its history and identity. The USA is one of the most ethnically diverse countries in the world, with people of various races, ethnicities, religions, languages, and ancestries. According to the 2020 census, the racial composition of the USA was 57.8% white (non-Hispanic), 18.7% Hispanic or Latino (of any race), 13.2% black or African American (non-Hispanic), 6% Asian (non-Hispanic), 1.3% Native American or Alaska Native (non-Hispanic), 0.2% Native Hawaiian or Pacific Islander (non-Hispanic), and 2.8% two or more races (non-Hispanic). The USA is also home to many immigrants and refugees from around the world who have enriched its culture and society.

Economically, the U.S. is the world's largest economy by nominal GDP and the second-largest by purchasing power parity. The U.S. is a market-oriented economy that relies on private enterprise, innovation, and competition. The U.S. is also a major producer and consumer of natural resources, such as petroleum, natural gas, coal, copper, gold, and silver. The U.S. has a highly diversified and advanced industrial sector that includes manufacturing, technology, aerospace, defense, and biotechnology. The U.S. is also a global leader in trade and investment, with the largest exports and imports of goods and services in the world. The U.S. dollar is the world's primary reserve currency and the most widely used in international transactions.

The USA is a mixed-market economy that combines private enterprise with public regulation and intervention. The USA has a highly diversified and productive economy that is driven by innovation, entrepreneurship, and trade. The USA is the world's largest exporter and importer of goods and services, with a total trade value of $5.6 trillion in 2020. The USA is also the world's largest consumer market, with a per capita income of $70,430 in 2021. The USA has a strong influence on the global economy through its currency, the US dollar, which is the most widely used reserve currency in the world.

Scientifically, the USA has made significant contributions to various fields of knowledge, such as physics, chemistry, biology, medicine, engineering, astronomy, and computer science. The USA is home to some of the world's most prestigious universities and research institutions, such as Harvard, MIT, Stanford, Berkeley, and NASA. The USA has produced more Nobel laureates than any other country, with 390 winners as of 2021. The USA is also the origin of many scientific discoveries and inventions that have changed the world, such as the atomic bomb, the internet, the GPS, the moon landing, the human genome project, and many others.

Science is the systematic study of the natural and social phenomena through observation, experimentation, and analysis. The USA is a world leader in scientific research and innovation, producing more than 20% of the global scientific output. The USA has the most Nobel laureates in science, with 377 as of 2021. The USA also has the highest number of universities ranked among the top 100 in the world for science, with 41 as of 2021. Some of the major scientific achievements of the USA include the development of nuclear weapons, the landing of humans on the moon, the invention of the internet, and the mapping of the human genome.

Educationically, the U.S. education system is a complex and diverse network of institutions, policies, and practices that aims to provide quality learning opportunities for students of all ages and backgrounds. The system is composed of multiple levels, from pre-kindergarten to post-secondary education, and encompasses public and private schools, charter schools, homeschooling, online learning, and other alternative forms of education. The system is also influenced by various stakeholders, such as federal and state governments, local districts, teachers unions, parents, students, and civil society organizations.

The U.S. education system faces many challenges and opportunities in the 21st century, such as addressing achievement gaps, ensuring equity and access, fostering innovation and creativity, preparing students for a globalized and digitalized world, and responding to the changing needs and demands of the labor market and society. The system also has to balance the goals of standardization and accountability with the goals of diversity and autonomy. The system is constantly evolving and adapting to the changing circumstances and expectations of its stakeholders and beneficiaries.

Medicinically is the science and practice of diagnosing, treating, and preventing diseases and injuries. The USA has a complex and fragmented health care system that involves multiple public and private actors. According to the Brookings Institution, health spending in the USA increased by 2.7% in 2021 to $4.3 trillion or $12,914 per capita. This spending accounted for 18.3% of the gross domestic product (GDP), which is the highest among developed countries. The USA spends more than other countries without obtaining better health outcomes, such as life expectancy and infant mortality. Some of the main challenges facing the US health care system are rising costs, unequal access, quality and safety issues, and inefficiencies.

Culturally, the U.S. is a melting pot of different ethnicities, races, religions, languages, and traditions that have shaped its history and identity. The U.S. is home to more than 300 million people who trace their ancestry to various regions of the world, such as Europe, Africa, Asia, Latin America, and Oceania. The U.S. is also a major source and destination of cultural influence, as it produces and consumes a wide range of media, entertainment, art, literature, music, cuisine, fashion, and sports that reflect its diversity and creativity. The U.S. is known for its values of democracy, freedom, individualism, equality, and opportunity that inspire many people around the world.

Athletically, the U.S. is a dominant force in many sports that are popular both nationally and internationally. The U.S. has a rich tradition of excellence in sports such as basketball, baseball, football (American), ice hockey (men's), soccer (women's), golf (men's), tennis (women's), swimming (men's), gymnastics (women's), track and field (men's), boxing (men's), skiing (women's), snowboarding (men's), skateboarding (men's), surfing (women's), and mixed martial arts (men's). The U.S. also hosts some of the most prestigious sporting events in the world, such as the Super Bowl, the World Series, the NBA Finals, the Stanley Cup Finals, the U.S. Open (tennis), the Masters Tournament, the Kentucky Derby, the Indianapolis 500, and the Boston Marathon . The U.S. is also a perennial leader in the Olympic Games, having won more medals than any other country in history.

Historcically, the Paleo natives migrated from Siberia to the North American continent at least 12,000 years ago, with advanced cultures appearing later. These advanced cultures had almost completely collapsed before European colonization arrived in the 16th century. The United States emerged from the thirteen British colonies when disputes with Great Britain over taxes and political representation led to the American Revolution (1765–1784) establishing the nation's independence. In the late 18th century, the United States began to expand across North America, gradually gaining new territories, sometimes through war, often causing Native Americans to relocate and occupy new states. By 1848, the United States stretched across the continent from east to west. Controversy over the practice of slavery culminated in the secession of the Confederacy, which fought the remaining Confederate states in the American Civil War (1861–1865). With the victory and preservation of the Union, slavery was abolished by the Thirteenth Amendment.

By 1900, the United States had become the world's largest economy, and the Spanish-American War and World War I had made it a world power. After the Japanese surprise attack on Pearl Harbor in 1941, the United States entered World War II on the side of the Allies. After the war, the United States and the Soviet Union became two world superpowers. During the Cold War, both nations fought for ideological supremacy but avoided direct military conflict. They also competed in the space race, culminating in the 1969 U.S. spaceflight, which put a man on the moon for the first time. At the same time, the civil rights movement led to legislation repealing state and local Jim Crow laws and other forms of codified racial discrimination against African Americans. The collapse of the Soviet Union in 1991 ended the Cold War, making the United States the sole superpower in the world. The September 11, 2001 attacks led the United States to launch the War on Terror, which included the War in Afghanistan (2001-2021) and the War in Iraq (2003-2011).

  • Approximately 50.66% female residents and 49.34% male residents live in as of 2020, 57.41% in United States are married and the remaining 42.59% are single population.

    As of 2020, 57.41% in United States are married and the remaining 42.59% are single population.

  • 25.3 minutes is the average time that residents in United States require for a one-way commute to work. A long commute can have different effects on health. A Gallup poll in the US found that in terms of mental health, long haul commuters are up to 12 percent more likely to experience worry, and ten percent less likely to feel well rested. The Gallup poll also found that of people who commute 61­–90 minutes each day, a whopping one third complained of neck and back pain, compared to less than a quarter of people who only spend ten minutes getting to work.

  • Of the total residential buildings in United States 60.14% are owner-occupied homes, another 29.36% are rented apartments, and the remaining 10.50% are vacant.

  • The 48.34% of the population in the United States of America who identify themselves as belonging to a religion are distributed among the following most diverse religions.

    Since the 1860s, the two main parties have been the Republican Party (here in 2020 = 51.3%) and the Democratic Party (here in 2020 = 46.9%) of those eligible to vote by United States presidential election 2020.

In 51 U.S. states are published

2197 Companies
652 Counties
1266 Cities

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