Answer:
by the initial period of the Zhou Dynasty, a number of innovations were made, some rulers were legitimized under the Mandate of Heaven, a feudal system developed, and new forms of irrigation allowed the population to expand.
Explanation:
as Russian was complicated state it was obligated to start changing in order to advance
<span>The reason and cause of the crusades was a war between Christians and Muslims which centered around the city of Jerusalem and the Holy places of Palestine.</span>
