What best defines the emancipation proclamation?

lincoln's reconstruction plan
slaves in states still in rebellion against the union would be free after january 1, 1863
confederate soldiers were set free after the war

in 1897, pershing became a tactical officer at west point, and that's where he was given the nickname "black jack." pershing's first name is "john," for which "jack" is a nickname, and he was a white man who commanded black troops. hence "black jack".