Question

The growth of European cities around the year 1000 was caused by

a. the increase of population and trade.
b. the decrease of Viking raids.
c. the end of the manor system.
d. the spread of Christianity.

Answer 1

a. the increase of population and trade.

Step-by-step explanation:

I just did it on Edg. ^^

Answer 2

THE ANSWER IS A THE INCREASE OF POPULATION AND TRADE!