I believe your answer is it established the final boundery between british canada and the U.S.
Hope this helps
The name of the little known city that was the sixth largest in the world in the past is Teotihuacan.
It was a city located in a sub valley of the valley of mexico and has been named as UNESCO's world heritage since 1987.
It proclaimed the freedom of slaves in the ten Confederate states still in rebellion. It also decreed that freed slaves could be enlisted in the Union Army, thereby increasing the Union's available manpower. The Proclamation also prevented European forces from intervening in the war on behalf of the Confederacy.
