Sunni and shia The division into these two denominations of Islam happened after the death of Prophet Muhammad, when there was contention as to who would be his successor. Some people (Sunnis) believed that only someone who is capable enough should be given this responsibility while others believed that the leadership should stay with only members of Prophet's family(Shias).
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The British refused to give supplies to the Native Americans after they replaced the French. They started settling in Native American land and treated them badly. Many were killed and smallpox broke out in the Natives.