Outline of United States history

The following outline is provided as an overview of and topical guide to the history of the United States.
By period.
Named eras and periods.
These multi-year periods are commonly identified in American history. The existence and dating of some of these periods is debated by historians.
These periods are commonly identified as the large changes within political parties. Newer Party Systems are typically disputed by experts and historians due to the complexity of changes in political parties.
See List of wars involving the United States.
By subject.
History books.
Books on the history of the United States:
External links.
 