. moveable type
gunpowder
paper currency
.
All of these items were invented
A)
by the Arabs.
B)
by the Mongols.
C)
in China during the Song Dynasty.
D)
in Mesopotamia's Sumerian Empire.

C

Explanation:

Printing, paper money, porcelain, tea, restaurants, gunpowder, the compass—the number of things that Chinese of the Song Dynasty (A.D. 960-1280) gave to the world

the results of roman expansion produced social conflict and civil war. julius caesar gained power and became a dictator but was then assassinated. the reign of augustus began a long period of imperial rule and peace in the roman empire. rome faced the problems of how to maintain peace, law, and order.

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b. ensure mutual protection from communism.

.