What is the correct number of Africans brought to western hemisphere for slave labor?
How do historians account for the fact that despite the pressures of the Atlantic slave trade, west Africa's population continued to grow?
Explain in what way the establishment of global trade networks brought deep change to sub-Saharan Africa? THANKS!!

porter is writing economic history because he is focusing on the cost of developing vaccines.

i believe it is capitalists.  

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.

sorry its a lil late, but the answer is d. the rotation 180° about z'