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   The proclamation of 1763 prohibited English settlement west of the Appalachian Mountains. This was done to prevent future wars with the natives; the English did not want to spend any more money fighting wars in North America. The colonists were outraged by the proclamation; they believed that that land was theirs because of the war they just fought. The proclamation of 1763 prohibited English settlement west of the Appalachian Mountains. This was done to prevent future wars with the natives; the English did not want to spend any more money fighting wars in North America. The colonists were outraged by the proclamation; they believed that that land was theirs because of the war they just fought.