<h2><u>Answer:</u></h2>
The correct option is D (Euclid)
<h3><u>Explanation:</u></h3>
Euclid, here and there given the name Euclid of Alexandria to recognize him from Euclides of Megara, was a Greek mathematician, regularly alluded to as the "author of geometry" or the "father of geometry". He was dynamic in Alexandria amid the rule of Ptolemy I.
Despite the fact that Euclid is a well known mathematician, next to no is thought about his life. It is trusted that he was an understudy of Plato. Euclid was conceived around 365 B.C. in Alexandria, Egypt and lived until around 300 B.C. Euclid's most well known work is his gathering of 13 books, managing geometry, called The Elements.
For human cost we lose soldiers which can sisters, brothers, fathers, mothers, for economic it puts big debt because people lose jobs and lose money, and for political it can be a positive or negative output.
The feudal system in europe led to the development of a new economic system called the _______ system
manorialism
