He 1)explain three rreasons why columbus made his voyages to the new world? ? 2) describe three achievements of the maya in science and 3) explain four causes of the decline of the taino population by 1560? ? 4)name four european ports which were involved in the trade in captive africans in 1700s? ?

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, systematically committed suicide and mass abortions.
4.Spain and Portugal, England and France, the Netherlands and Denmark