January 1, 1839
1839 British capture of Aden
1839 military Conquest; Russian colonisation of Central Asia
1839 series of riots and forced conversions of Jews to Islam in Iran
Failed Russian invasion of the Khanate of Khiva
1839 Chinese destruction of illegal opium seized from British traders, which led to the First Opium War
1839 battle of the War of the Confederation
Treaty signed on 19 April 1839
1839 battle in the Mexican Federalist War
Political crisis in the United Kingdom
1839 military action during Caucasian War.