18 notable events from 1840 — massacres, wars and crises.
- Oriental Crisis of 1840
Nov 1840 · Egypt · Crisis
- Rhine crisis
1840–1841 · Crisis
- Great Raid of 1840
Aug 7, 1840 · United States · Massacre
- Great Natchez Tornado
May 7, 1840 · United States · Natural disaster
- Council House Fight
Mar 19, 1840 · United States · War & armed conflict
- Tenpo Gimin incident
1840 · Japan
- Maria massacre
Jul 1, 1840–Jul 14, 1840 · Australia · Massacre
- Cambodian Uprising (1840–1841)
1840 · Vietnam · War & armed conflict
- Gippsland massacres
Jan 1, 1840 · Australia · Massacre
- 1840 Ararat earthquake
Jul 2, 1840 · Türkiye · Earthquake
- Storming and Capture of Acre
Nov 3, 1840 · Israel · War & armed conflict
- Bombardment of Beirut (1840)
Sep 10, 1840 · Lebanon · War & armed conflict
- Battle of Ammal
Apr 1840 · Algeria · War & armed conflict
- Howden rail accident
Aug 7, 1840 · United Kingdom · Rail accident
- Pierre-Vincent Eliçabide affair
May 1, 1840 · France · Crime & justice
- Fighting Waterholes massacre
from Apr 1, 1840 · Australia · Massacre
- Fighting Hills massacre
from Mar 8, 1840 · Australia · Massacre
- Abduction of the matamores of Bou-Chouicha
Nov 11, 1840 · Algeria · Kidnapping & hostage