Why did the British feel justified in issuing the Proclamation of 1763?

The Proclamation of 1763 was issued by the British at the end of the French and Indian War to appease Native Americans by checking the encroachment of European settlers on their lands. ... In the centuries since the proclamation, it has become one of the cornerstones of Native American law in the United States and Canada.

Explanation:

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.