Answer: B
Explanation: checks and balances is when one branch can CHECK the actions of another branch this allows for there to be no abuse or misuse of power amongst any branches BALANCES.
The answer is A: The development of the first mathematical system of perspective
Firearms is the most common
Answer:
the Proclamation of 1763
Explanation:
The proclamation of 1763 was made to prevent colonial expansion westward beyond Appalachia. This essentially made it illegal for the colonists to acquire the resources on the territory beyond Appalachia and conducted a business with the natives who live there.
This proclamation created a conflict between the English government and the Colonists. A lot of colonists had economic interest on the forbidden territory, since its contain vast amount of agricultural land and potential mining sites.