1492 : 1492 Chistopher Colombus discovery of America 1607 : 1607 First colony in America 1776 : 1776 The declaration of Independance 1783 : 1783 End of the war of independence 1682 : 1682 Philadelphia was founded 1621 : 1621The first thanskgiving was celebrated 1777 : 1777 design of the american flag 1783 : 1783 the treaty of Paris was signed 1789 : 1789 Georges Washington was elected president
