The best explanation for how humans populated the earth is a) they migrated from asia to other continents over the last billion years b) they migrated mostly over land from africa over the last 80,000 years c) they develop varied human species in different places over millions of years d)i traveled by boat from ever go to other continents over the last 40,000 years

b, public works good luck

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.