Why did pontiac begin attacking british forts and settlements in the west

Pontiac's War (also known as Pontiac's Conspiracy orPontiac's Rebellion) was launched in 1763 by a loose confederation of elements of Native American tribes, primarily from the Great Lakes region, the Illinois Country, and Ohio Country who were dissatisfied withBritish postwar policies in the Great Lakes region after 

when the war began in May 1763 when Native Americans became offended by the policies of British General Jeffrey Amherst,therefore, ended out attacking a number of British forts and settlements.

Brainliest if satisfied

It would mean a lot