C. Relative Dating is your answer I think.
It was originate in the west of the United States
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As a general impact over all of Africa, foreign invaders, typically from Europe, initially seemed to have a positive impact in the sense that they introduced public schools and basic hygiene, but the also had many negative impacts because eventually, in the 18-1900's when many African nations became independent countries and forced the Europeans out, they were left with little government, political, or economic skills which is why many of the African nations of the modern day are still considered developing countries.
Women could only join reform groups if they were invited and sponrosed by their husband. <span />
