The statements that describe how Feudalism work is :
1. A lord would be given land by the king in return for homage or a promise to serve the king when called upon.
4. A vassal depended on the agricultural production of serfs to feed the whole system
5. A king would hire a vassal to provide an army and political advice during times of war
The Hellenistic Erasistratus discovered the heart was the pump to push blood through the arteries.
Aristarchus developed the theory that the sun was the center of the universe.
Euclid wrote the basic geometry book, Elements, that was used for 2000 years.
Hero of Alexandria devised the first steam engine although he considered it merely a toy.
Enslaved workers supported the Southern economy because they harvested crops on the southern plantations, and this helped the South's agriculture-based economy.
It is called the Yangtze river and it is known as the golden waterway because it is the longest river of Asia
Kurds is located south-eastern Turkey, north-eastern Syria, northern Iraq, north-western Iran and south-western Armenia.
