Chromium forms many colorful compounds that have industrial uses. Lead chromate (PbCrO4), also known as chrome yellow, has been used as a yellow pigment in paints. Chromic oxide (Cr2O3), also known as chrome green, is the ninth most abundant compound in the earth's crust and is a widely used green pigment. Rubies and emeralds also owe their colors to chromium compounds.
The debates between Stephen Douglas and Abraham Lincoln have been described as the most famous war of words in history.. The two men, the Democratic Little Giant and the Republican Tall Giant, met for a series of debates throughout Illinois.
On this day in 1863, President Abraham Lincoln delivers what will become one of the most famous speeches in American history, at the dedication of the military cemetery at Gettysburg, Pennsylvania. Using just 272 words, Lincolnarticulated themeaning of the Civil War for a public that had grown weary of the conflict.