The answer is C. Rubber. Iquitos profited greatly from the boom of the rubber industry, beginning in the 1900s.
Because of the need for water and other resources. Central Australia is mainly desert, and has a hot, dry climate.
4" (and any subsequent words) was ignored because we limit queries to 32 words.
They came because of Rinderpest. Before coming to South America, Africans in Africa depended on cattle such as cows to thrive. But Rinderpest brought to Africa by foriegners began to spread, and the cattle started to suffered from fevers, inflammation in the brain and dysentery. They also had major problems with Europeans and their industries. So they decided to settle in South America.
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