The first constitution created by a nation is the Constitution of the United States, ratified in 1788. This document laid the foundation for a federal system of government, establishing the separation of powers among the legislative, executive, and judicial branches. It incorporated the Bill of Rights, which ensured individual liberties and rights. The U.S. Constitution has served as a model for numerous other nations and constitutional documents throughout history. Its influence on governance and democratic principles remains significant in contemporary legal and political systems around the world.