Please answer these questions about economics.

i believe we're not a republic so that is a hard question

the answer wold be b) travel among nations should be regulated by an international organization

in the 1950s, country music came into its own before rock-n-roll took off in the 60s while jazz and classical music continued to innovate

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.