I'm really desperate and i'd appreciate if someone answers all these in 4 sentences: what did the proclamation of 1763 do? why was the proclamation issued? what effect did the proclamation have on the colonies?

In 1763, at ethe end of the French and Indian War, the British issued aproclamation,mainly intended to conciliate the Indians by checking the encroachment of settlers on their lands. ... This royal proclamation, which closed down colonial expansion westward, was the first measure to affect all thirteen colonies.