Between 1526 and 1870 how many slaves were shipped to brazil

Nearly 10 million.

Source: thirteen.org/wnet/historyofus/web05/segment1.html

The most comprehensive analysis of shipping records over the course of the slave trade is the Trans-Atlantic Slave Trade Database, edited by professors David Eltis and David Richardson. (While the editors are careful to say that all of their figures are estimates, I believe that they are the best estimates that we have, the proverbial “gold standard” in the field of the study of the slave trade.) Between 1525 and 1866, in the entire history of the slave trade to the New World, according to the Trans-Atlantic Slave Trade Database, 12.5 million Africans were shipped to the New World. 10.7 million survived the dreaded Middle Passage, disembarking in North America, the Caribbean and South America.

Explanation:

the answer for 3 is b and the answer for 4 is d

the real answer is b