This is an app about History of the United States of America, In 1776, in Philadelphia, the Second Continental Congress declared the independence of the colonies as the United States. Led by General George Washington, it won the Revolutionary War with large support from France, and additional help from Spain and the Netherlands.
The territory represented by the continental United States had, of course, been discovered, perhaps several times, before the voyages of Christopher Columbus. When Columbus arrived, he found the New World inhabited by peoples who in all likelihood had originally come from the continent of Asia. Probably these first inhabitants had arrived 20,000 to 35,000 years before in a series of migrations from Asia to North America by way of the Bering Strait. By the time the first Europeans appeared, the indigenous people (commonly referred to as Indians) had spread and occupied all portions of the New World.