I believe the correct answer to be D but it could also be A
The Russian Revolution was sparked by the manner in which the people were treated and the miserable conditions in which they were living under the Tsar Nicholas II. The people were not willing to put up anymore with the poverty and unjustly treatment towards them, so led by Vladimir Lenin, they revolted. The revolution was successful at the end, and it put end to the monarchy in Russia, while it opened up the doors for the communism at the same time. Unfortunately for the Russians, the century ahead of them didn't turned out to be better, but the same, or even worse at times.
The Shang clan ruled with a system of central government, while the Zhou established independent feudal states, allowing power to local rulers instead. The Zhou Dynasty focused on the success of their people in order to gain strength as a community.
The Shang Dynasty (also called the Yin Dynasty) succeeded the Xia Dynasty, and was followed by the Zhou Dynasty. It was located in the Yellow River valley during the second millennium BCE. It featured a stratified social system made up of aristocrats, soldiers, artisans and craftsmen, and peasants.
The battle of Marathon took place on 490 BC in Athens Greece.
Hope I helped!
- Debbie