Which 1787 meeting produced the U.S. Constitution that established the federal government celebrated during America250?

The Constitutional Convention produced the U.S. Constitution in 1787, establishing the federal government celebrated during America250. Delegates met in Philadelphia from May 25 to September 17, officially to revise the Articles of Confederation but ultimately drafting an entirely new framework.

George Washington presided over the convention. Major agreements included a bicameral Congress, the Great Compromise dividing representation between population-based and equal-state principles, and a federal executive headed by a president. Delegates also created checks and balances among legislative, executive, and judicial branches.

The convention’s work still required approval by special state ratifying conventions. New Hampshire supplied the ninth ratification needed on June 21, 1788, and the new government began in 1789. Rhode Island ratified last, in 1790. The convention is distinct from the later First Congress, which proposed the Bill of Rights.