American colonists were upset with the Proclamation Line of 1763 primarily because it restricted their ability to expand westward into new lands. This limitation was seen as an infringement on their rights and economic opportunities. Ultimately, it contributed to their growing discontent with British control and governance. ;
The American colonists were upset with the Proclamation Line of 1763 because it limited their expansion westward, which they viewed as a restriction on their rights and economic opportunities. This restriction contributed to their growing discontent with British governance. Therefore, the best interpretation of this situation is option A: None of the above, because the options do not correctly represent the primary reasons for the colonists' dismay.
;