Answer:
Algebra
Explanation:
Egyptians were pioneers in the use of algebra, althoug more specifically in its application to geometry and trigonometry. Calculations for engineering projects were vital, however few examples survive, and are concentrated in papyrus such as the Moscow Mathematical Papyrus. Specifically there were demonstrations of geometrical progression and of equations.
Answer:
Increase the reserve requirement
Explanation:
The European trade routes to the East changed from the land based system like the Silk Road into the sea based system that travels either westward or southward to east. This is because the lost of the trade routes in the land due to the conflict and wars forced the Europeans to create a new route through the sea and this is the time that theory the world is round is proven and is taken into consideration for making a new trade route.
According to Pope Urban II, the best way to get people to unite is to give them a common enemy.
Pope Urban II pitched the Crusades as a religious duty with a side of fighting.
The Black Death was most likely spread through Western Europe by rats and their fleas.
The Black Death was the second major epidemic of its time. The first known epidemic of of the disease that also caused "The Black Death" was The Plague of Justinian.