The Proclamation of 1763, Signed by King George III, Was

The Proclamation of 1763, signed by King George III, was significant to the colonies because:

A) it ended the reign of King George III as ruler of Britain.
B) it ended westward expansion of the colonies and placed them under military rule.
C) it began westward expansion of the colonies, eventually leading to the demise of Native Americans.
D) it led to the appointment of George Washington to his first political post in the colonies.