What was the Proclamation of 1763? Why was it created?

The Proclamation Of 1763 created a boundary known as the proclamation line, separating the British colonies on the Atlantic coast from American Indian lands west of Appalachian Mountains. In the centuries since the proclamation, it has become on of the cornerstones of Native American law in the United States and Canada.

P. S. Put this in your own words otherwise you will be plagiarizing.