Answer:
O: Transcontinental Railroads
Explanation:
I remember reading about it in history class
The Zhou Dynasty used the notion of the Mandate of Heaven to defend the overthrow of the Shang Dynasty. The "Mandate of Heaven" is an earliest Chinese philosophical concept, which was created during the Zhou Dynasty(1046-256 BCE). The Mandate of Heaven decides whether a ruler of China is satisfactorily righteous to lead; if he does not accomplish his responsibilities as an emperor, then he fails the Mandate and thus the right to be emperor. Zhou leaders appealed that the Shang emperors had become fraudulent and unfit, so Heaven commanded their removal.
Taizong, Kao Tsung, Wu Zetian, Wuzong;;
I hope this helped :)
The correct answer is letter D. There was a wave of attacks in Western Europe in the Middle Age which has destroyed almost completely the Roman Empire, and has diminished the population. Even with such attacks Western Europe managed not to fall apart, and the Church had a big role. While the Roman Empire collapsed, the Church took over many government functions. The attacks were protagonized by ostrogoths, visigoths, vandals, vikings, muslims, persians, saxons.
Some of the responsibilities of vassals for the lord included: Maintain the Lord's manor...Watch over day-to-day activities...And occasionally help advise the king on simple matters of the land.