The United States of America, a state of 50 states, occupies a large part of North America. Alaska is located in the northwest of the continent, and Hawaii in the Pacific Ocean. The United States of America was formed in 1776 with the union of thirteen British colonies, declaring their independence. The country's economy is about a quarter of world GDP and produces a third of global military spending, which makes the US the main economic and military power on the planet.
