U.S. acquires vast tracts of Mexican territory in wake of Mexican War including California and New Mexico.
1854 · The Crimean War
The Crimean War was fought between Russia and an alliance of Britain, France, Sardinia and Turkey on the Crimean Peninsula. Russia had put pressure on Turkey which threatened British interests in the Middle East.
Abraham Lincoln issues Emancipation Proclamation, declaring slaves in Confederate states to be free.