Unsteady politics in foreign countries
The answer is:
C. The ash mixed with the typhoons rain became too heavy for roofs to support.
The Hans dynasty retains centralized burueacracy and unified political system of the Quin but adopts and grafts upon this the Confucian view that government should be run by educated, ethnical men.
It started in the 1880's.
Both geography and climate greatly shaped Greek life and history since Greece's location on the Mediterranean allowed them to be leaders in trade (due to multiple ports of entry), and their climate was very conducive to growing things like olives and other foods that were very healthy.
