Category
page 1Conflicts in 1840
Second Egyptian-Ottoman War
1839–1841 war between the Ottoman Empire and the Eyalet of Egypt
Second Seminole War
1835–1842 war in Florida
Cabanagem
The Cabanagem (; 1835–1840) was a popular revolution and pro-separatist movement that occurred in the then province of Grão-Pará, Empire of Brazil.
Khivan campaign of 1839–1840
Failed Russian invasion of the Khanate of Khiva

Oriental Crisis of 1840
episode in the Egyptian–Ottoman War

Rhine crisis
diplomatic crisis between France and the German Confederation (1840/41)
Battle of Mazagran
battle in February 1840
War of the Supremes
1839–41 civil conflict in the Republic of New Granada
Battle of Acre
1840 battle between Egypt and the Ottoman Empire
Capture of Chusan
1840 battle between China and Britain
Battle of the Valerik River
1840 battle fought at this river
Sulphur Crisis of 1840
conflict between Sicily and the United Kingdom
Great Raid of 1840
largest raid mounted by Native Americans on white cities, now the US
1840 Cambodian anti-Vietnamese Rebellion
anti-Vietnamese uprising in Cambodia
Battle of Plum Creek
1840 battle