When was the United States founded?

It was originally a settlement of Indians. /kloc-At the end of 0/5, Spain, the Netherlands, France and Britain began to immigrate to North America. Britain came from behind, and by 1773, Britain had established 13 colonies. 1775, the American people's war of independence against the British colonists broke out. 1776 On July 4th, the Second Continental Congress was held in Philadelphia, and the Continental Army was formed, with George Washington as the commander-in-chief. The Declaration of Independence was adopted and the United States of America was formally established. The war of independence ended in 1783, the federal constitution was formulated in 1787 and George Washington was elected as the first president in 1788. After 18 12, she got rid of British rule completely. 1860, abraham lincoln, a Republican who opposed slavery, was elected president. 1862 After the publication of The Emancipation Proclamation in September, the slave owners in the south rebelled and the civil war broke out. 1865, the war ended in victory in the north, thus clearing the way for the rapid development of American capitalism. /kloc-At the beginning of the 9th century, with the development of capitalism, the United States began to expand abroad. In the 100 years after 1776, the territory of the United States almost expanded by 10 times. After World War II, American national strength increased greatly.