November 28, 2021
The United States of America, officially the United States or the United States, is a federal republic in North America consisting of 50 states, the Federal District of Columbia (which is also the capital and is better known as Washington, DC) and a number of smaller territories. The 48 states that make up the continental United States border Canada in the north and Mexico in the south. The United States has an area of 9,526,517 square kilometers. This makes the United States the world's fourth largest country, after Russia, Canada and China. The United States has about 325 million inhabitants per. 2017, which also makes the country the world's third most populous, surpassed only by China and India. The federation originally consisted of thirteen colonies that seceded from Britain in 1776. During the 19th century, the United States expanded greatly to the west, while the country received large numbers of immigrants from all over Europe. Immigrants - who have come from all over the world since the 20th century - have made American society demographically very heterogeneous, and the country consists of very many different ethnic and religious groups. After World War II, the United States became one of the world's two "superpowers" alongside the Soviet Union, while American film, music, and other cultures had a major impact on the entire world. Since the end of the Cold War in 1989, the United States has been the world's clearly leading economic and military power. The country houses many of the world's most famous universities and research institutions, and is a world leader in high technology. As a federal republic, political power in the United States is divided between the federal government in Washington and the states. At the federal level, power is divided between the president (since 2021 Joe Biden), a two-chamber congress and the Supreme Court. A similar structure is largely followed in most states, with a politically elected governor, a state congress and a state supreme court. The two major and dominant parties in the United States are called the Republicans and the Democrats.