<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.
This letter was written by Leo Szilard, a Hungarian-German-American physicist and signed by Albert Einstein on August 2, 1939. In this letter he urged the president to get involve on a nuclear research and project as Germany might be planning and developing an atomic bomb.
Explanation:
As we all of us know that we living being are surviving on the earth due to the presence of sunlight, water , oxygen and suitable temperature and weather . so with the help of these all essential things we are living on the earth
It would be "<span>Slavery was an established institution until the Twelfth Amendment was ratified on December 18, 1865" that is not true, since it was in fact the 13th amendment that ended slavery. </span>
The reputations of many people were ruined by false accusations of disloyalty
