United States

The United States of America (USA), commonly known as the United States (U.S. or US) or America, is a country composed of 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles (9.8 million km2), the United States is the world's third or fourth largest country by total area and is slightly smaller than the entire continent of Europe's 3.9 million square miles (10.1 million km2). With a population of over 327 million people, the U.S. is the
China
China, officially the People's Republic of China (PRC), is a country in East Asia and the world's most populous country, with a population of around 1.404 billion. Covering approximately 9,600,000 square kilometers (3,700,000 sq mi), it is the third- or
Russia
Russia (Russian: Росси́я, tr. Rossiya, IPA: [rɐˈsʲijə]), officially the Russian Federation (Russian: Росси́йская Федера́ция, tr. Rossiyskaya Federatsiya, IPA: [rɐˈsʲijskəjə fʲɪdʲɪˈratsɨjə]), is a
Demography of the United States
The United States is the third most populous country in the world with an estimated population of 328,285,992 as of January 12, 2019. It is highly urbanized, with 82.3% of the population residing in cities and suburbs. Large urban clusters are spread
U.S. state
In the United States, a state is a constituent political entity, of which there are currently 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory and shares its sovereignty
History of the United States
The history of the United States began with the settlement of Indigenous people before 15,000 BC. Numerous cultures formed. The arrival of Christopher Columbus in the year of 1492 started the European colonization of the Americas. Most colonies formed
Economy of the United States
The economy of the United States is a highly developed mixed economy. It is the world's largest economy by nominal GDP and the second-largest by purchasing power parity (PPP). It also has the world's seventh-highest per capita GDP (nominal) and the
New York City
The City of New York, usually called either New York City (NYC) or simply New York (NY), is the most populous city in the United States and thus also in the state of New York. With an estimated 2017 population of 8,622,698 distributed over a land area of
Canada
Canada (Canadian French: [kanadɑ]) is a country in the northern part of North America. Its ten provinces and three territories extend from the Atlantic to the Pacific and northward into the Arctic Ocean, covering 9.98 million square kilometres (3.85
California
California is a state in the Pacific Region of the United States. With 39.6 million residents, California is the most populous U.S. state and the third-largest by area. The state capital is Sacramento. The Greater Los Angeles Area and the San Francisco
United Kingdom
The United Kingdom, officially the United Kingdom of Great Britain and Northern Ireland but more commonly known as the UK or Britain, is a sovereign country lying off the north-western coast of the European mainland. The United Kingdom includes the island