American/Freeciv

Description
The United States of America achieved its independence from Great Britain after a revolution in 1776-1783 CE. Its constitution was proclaimed in 1789, making the country one of the first modern representative republics. The United States then started to expand its territory, first on the North American mainland and later also overseas. By the 20th century the country had become a world superpower; its cultural, economic and political influence on the rest of the world is enormous.