Which statement best describes the silk roads?
a) they were a network of roads controlled by no one.
b) they were a network of roads controlled by the romans.
c) they were a network of roads controlled by the chinese.
d) they were a network of roads controlled by local governments.

answer; the mayans and

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

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.