U.S. acquires vast tracts of Mexican territory in wake of Mexican War including California and New Mexico.
Tennessee was known as the Volunteer State because during the Mexican War the government asked Tennessee for 3,000 volunteer soldiers and 30,000 joined.
Abraham Lincoln issues Emancipation Proclamation, declaring slaves in Confederate states to be free.
1 English: topographic name from Middle English dene ‘valley’ (Old English denu), or a habitational name from any of several places in various parts of England named Dean, Deane, or Deen from this word. In Scotland this is a habitational name from Den in Aberdeenshire or Dean in Ayrshire.2 English: occupational name for the servant of a dean or nickname for someone thought to resemble a dean. A dean was an ecclesiastical official who was the head of a chapter of canons in a cathedral. The Middle English word deen is a borrowing of Old French d(e)ien, from Latin decanus (originally a leader of ten men, from decem ‘ten’), and thus is a cognate of Deacon .3 Irish: variant of Deane .