The United States was the first place where Indians lived. At the end of 15, Spain, the Netherlands, France and Britain immigrated here one after another. 13 Before the 8th century, Britain established13 British North American colony on the Atlantic coast of the United States. 1775, the American people broke out the war of independence against the colonial rule of the British Empire.

1787, the constitution of the United States was passed, and a federal state was established. 186 1 to 1865, the American civil war broke out. Since then, the United States has ended the state of semi-slavery and semi-freedom, started to fully implement free capitalism, and embarked on the road of rapid development. From 1803 to 1959, the territory was continuously expanded through purchase and war.