the united states was founded 244 years ago. the united states, whose full name is the united states of america, is a federal republican constitutional state composed of washington, d.c., 50 states, and many overseas territories, including guam, and was established on july 4, 1776.

the united states is a highly developed capitalist country, in the two world wars, the united states and other allies won victories, after decades of cold war, after the collapse of the soviet union, became the only superpower, in the economy, culture, industry and other fields in the world's leading position.

history of the united states

the united states was originally inhabited by indians until the end of the 15th century, when the arrival of spanish, dutch, french, and british proposed a number of colonies in the united states. in 1775, the american people's war of independence against the colonial rule of the british empire broke out.

on july 4, 1776, the second continental congress was held in philadelphia, with george washington as commander-in-chief of the continental army, and the declaration of independence was issued, proclaiming the official establishment of the united states of america.

at the end of the war of independence in 1783, britain recognized the independence of 13 colonies. the u.s. constitution was adopted in 1787 to establish a federal state. from 1861 to 1865, the civil war broke out in the united states. abraham lincoln led the free states of the north over the slave states of the south. the united states thus ended its "half-slave, half-free state."