Help plz Why did the British establish the Proclamation Line of 1763?

So they could sell the land West of the line for profit

A) To prevent colonists from moving West and causing conflicts with Native Americans

B) Because they had won the French and Indian War and wanted to reserve that territory

C) In order to maintain control of the Great Lakes

- "a new era of american politics began with jackson's election in 1828, but it also completed a grand social experiment begun by the american revolution. nevertheless, jacksonian democracy represented a provocative blending of the best and worst qualities of american society."

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b: the establishment clause  

b: socialism  

b. sec, foreign relations