What Happened in 1840
4 historical events, 5 notable births, and 2 notable deaths in 1840.
Major Events
January 1840
general
1840 — year
general
1840s — decade
war
Mexican-American War — military conflict between the United States of America and Mexico from 1846 to 1848
politics
1840 United States presidential election — 14th quadrennial U.S. presidential election