USA

The United States of America (USA), commonly known as the United States (U.S. or US) or America, is a country consisting of 50 states, a federal district, five major self-governing territories, and various possessions. At 3.8 million square miles (9.8 million km2), it is the world’s third- or fourth-largest country by total area. Most of the country is located in central North America between the countries of Canada and Mexico. With an estimated population of over 328 million, the U.S. is the third most populous country in the world. The capital is Washington, D.C., and the most populous city is New York City.
Gross domestic product: 20.54 trillion
Currency: USD
Capital: Washington, D.C.

A highly developed country, the United States is the world’s largest economy by nominal GDP, the second-largest by purchasing power parity, and accounts for approximately a quarter of global GDP. The United States is the world’s largest importer and the second-largest exporter of goods, by value. Although its population is only 4.3% of the world total, it holds 29.4% of the total wealth in the world, the largest share of global wealth concentrated in a single country. Despite income and wealth disparities, the United States continues to rank very high in measures of socioeconomic performance, including average wage, median income, median wealth, human development, per capita GDP, and worker productivity. It is the foremost military power in the world, making up more than a third of global military spending, and is a leading political, cultural, and scientific force internationally.