How did british companies treat american customers after the revolution

Before the Revolution, British companies policies became stricter which benefited the mother country at the same time it limited the colonies growth. Also, these American colonies had to help pay the debt resulted from the  French and Indian War. After the Revolution, both countries realized that they both needed each other for trade and commerce and that they shared a common heritage and language which made them treat each other quite well. However, Britain did still often kidnap American sailors and force them to serve in the British Navy which led to the War of 1812.  

disease was the number one killer of native peoples. they had had little exposure to the diseases of europe. this led to some villages being almost completely wiped out and some tribes destroyed.