Your answer is A, Conflict with Native Americans ended.
Louisiana purchase entailed negative consequences for most of the Louisiana population - blacks and Indians - and became one of the causes of acute social contradictions in modern America. In just 30 years, Americans ousted Indians from most of the Mississippi Valley, physically destroying or expelling them from their ancestral lands through fraudulent treaties
Bosnia, the Serbian population of Bosnia declared war on the Muslims in an effort to completely drive them out of the country.This was referred to as ethnic cleansing .
