In roman times most people lived in small cities, while during the middle ages most people lived in the countryside. all of the following are reasons for this change except
a. people fled the urban centers because they had become too crowded and unsanitary
b. the city no longer was a center of government
c. the cities came under attack from outside invaders
d. the trade-based economy of the city declined

The correct answer is : A. people fled to the urban centers because they had become too crowded and unsanitary

the government closely monitored its finances to avoid another financial collapse.

president carter called the victims of kidnapping "victims of terrorism and anarchy" and added that the united states was not going to give in to blackmail. in the united states, they see hostage-taking as an outrage on the part of the islamist movement that violated the principle of international law on the immunity and inviolability of diplomats and their embassies.

carter refused to yield to the demands, khomeini used the situation to consolidate his power and nullify the challenges of the moderate wing of his government, headed by its president. the euphoria over the humiliation of the most powerful nation distracted the iranian people from the economic difficulties of their country. carter, in april 1980, broke diplomatic relations with iran and imposed a trade embargo, except medicine and food. iranian funds in the us they were frozen and accounted for to compensate the hostages when they were released and to pay the demands of us companies against iran.