Which of the following characteristics best set apart the postclassical era from any time before it?
a. the development of democracy
b. the growth of the islamic empire
c. the implementation of the code of hammurabi
d. the formation of the first monarchies

B is the correct option.

Explanation:

Islam spread through the conquests, these conquests were inspired by religion and politics equally. Although there limited sources that talk about the early conquest but they are unreliable. The spread of Islam went hand in hand with military conquests. Historians are divided that whether Islam was a motivating factor behind Muslim Imperialism. There are several passages in the Quran supporting military actions against Non-Muslims.

john maynard keynes developed new economic theories in response to the stock market crash of 1929. great depression of the 1930s. first and second world wars. economic boom of the 1950s.

he sent troops to protect the students as they entered the school.