Answer:
A. they irrigated crops is the correct answer.
Explanation:
Feudalism began during the period of Viking, Magyar, and Muslim invasions.
It's been tense. After the Assad regime apparently dropped chemical weapons on people on Syria Trump has said he will do something about. Syria is an ally with Russia which has caused tensions between the two super powers.
The answer is c. ascetic values. At first Christians were persecuted by Rome
and many Christians were scattered to different countries. Later on when Constantine allowed
Christianity to be worshipped the religion grew as more people converted to the
Christian faith.