Writing began to disappear and the standardized weights and measures used for trade and taxation fell out of use. Scholars have put forth differing theories to explain the disappearance of the Harappans, including an Aryan Invasion and climate change marked by overwhelming monsoons.
Britain gave out the proclamation of 1763 which banned colonists from going west to the Appalachian mountains and into the Indian territory because Britain did not want to start another costly war
