Episode 2 of 2

United States declares war on the United Kingdom

When
18 June 1812
Where
United States Congress, Washington, D.C.
Part of
Outbreak of the War of 1812

On 18 June 1812, the United States declared war on Britain after majorities in both chambers voted along party lines.

The United States declared war on Britain on 18 June 1812. Majorities in both the House and Senate voted for war in June 1812, though they were divided along strict party lines, with the Democratic-Republican Party in favour and the Federalist Party against. The declaration opened the War of 1812, a conflict fought mainly in North America and at sea during the wider Napoleonic Wars, affecting the United States and Canada.

Sources

  1. War of 1812 Wikipedia, revision of 2026-09-29

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.