A historian who compares world events during the classical era to world events during the modern era is organizing history by​ ___. a.) theme
b.) culture
c.) period
d.) region

C.) Period

I hope I could help.

b.   jim crow laws were enacted in northern states.

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation: