Explanation:
Exodusters was a name given to African Americans who migrated from states along the Mississippi River to Kansas in the late nineteenth century, as part of the Exoduster Movement or Exodus of 1879. It was the first general migration of black people following the Civil War.
1.Gold,Spread christianity,Faster trade route to Asia
2.Astronomy,The calender,Number system
3.physical fatigue, island illnesses, such as German misles and chicken-pox,massacres perpetrated by the Spanish,<span> systematically committed suicide and mass abortions.
4.</span><span>Spain and Portugal, England and France, the Netherlands and Denmark</span>
Gun powder , the compass , herbal medicine to treat malaria such as brewing wormwood into a tea , paper , and the invention of natural silk.
Mexico, is the main source of immigrants in World War 1