What are some possible causes of an ice age? describe milankovitch cycles. when was the most recent ice age, and what percentage of the earth’s surface was covered by ice at that time?

most recent percentage covered is 32%. its when the earths climate cools quickly witch creates the ice masses in or near the water.

Explanation

the effect of the ming leaders banning ships with more than two masts was that there was no further construction of ships masts, because there was a surplus. ming emperors disallowed foreign exploration

i think the answer is b.