Overview
Timelines
Overview and main events
Colonial Settlement and American Revolution
The New Nation and Early Expansion
Civil War and Reconstruction
Westward Expansion and Manifest Destiny
Industrialization and the Progressive Era
World War II and the Post-War Era
Civil Rights and Social Movements
Presidential History and Notable Leaders
Chronicle
Articles
The New Nation and Early Expansion
This timeline explores the formation of the new nation, the drafting and ratification of the U.S. Constitution, and early expansionist policies.
1781-1789
Confederation Period
The Articles of Confederation govern the newly independent states, but prove inadequate for providing stability and effective governance.
May 25 – September 17, 1787
Philadelphia Convention
The Constitutional Convention drafts the United States Constitution, which will replace the Articles of Confederation.
1787-1788
Ratification of the Constitution
The Constitution is ratified by the necessary number of states, with New Hampshire being the ninth state to do so on June 21, 1788.
April 30, 1789
George Washington's Inauguration
George Washington is inaugurated as the first President of the United States, marking the beginning of the federal government under the new Constitution.
1803
Louisiana Purchase
The United States purchases the Louisiana Territory from France, doubling the size of the country and significantly expanding its territory.
