The First Crusade is initiated when Byzantine Emperor Alexius Comnenus requests help in reconquering from the Seljuk Turks the lost territory of Asia Minor . Pope Urban II at the Council of Clermont calls upon the princes of Christendom for an armed “pilgrimage” to recover Jerusalem from the Muslims.
In the early 1600 Ming China was conquered by the Manchus. In 1644 they conquered the Chinese empire and established the Qing dynasty.
The two types of farm owning developed slavery because the owners of them were allowed to have slaves. The encomienda system was based on the idea that conquerors should have slaves to work for them, and it similarly applied to sugar colonies that had slaves on them. They were responsible for a lot of trafficking of slaves from Africa.
Answer:
"The Condition of the Working Class in England" is a profoundly important book because it reveals the raw empirical data that confronted the young Engels. Out of the panorama of misery and class oppression that he observed in England in the 1840s, he came to the conclusion that proletarian revolution was necessary.