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 for the question that is being presented above is this one: "a. macadam." Macadam is the <span>term that refers to the road paving system developed by a Scottish inventor in 1815 that used a raised foundation of crushed rock</span>
