As the city of Kiev declined in importance, what city gained importance?

yes

explanation:

the answer is 1.. i think

the causes of the dust bowls were severe droughts,   lands became dry and hard, temperature was higher than usual, hot and dry conditions killed crops, high winds. because of those factors, the winds kicked up dry soil and created clouds of dust.

answer is :

many churches split during the movement.

new religions grew in popularity.