Why were the British colonists upset about the Proclamation of 1763? A. it forced them to use English vessels when shipping goods
B. it discouraged them from trading with other countries
C. it pervented them from settling west of the Appalachian
D. it required them to build fortresses along the Mississippi River

C: it prevented them from settling west of the Appalachian

Explanation:

The Proclamation forbade all settlement west of a line drawn along the Appalachian Mountains, which was delineated as an Indian Reserve.

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.