Answer:
"The 1800 election result revealed a serious flaw in the U.S. Constitution, which said that candidates for president and vice president ran on the same ballot, which meant running mates could be running against each other. The 12th Amendment, which changed the Constitution to prevent the 1800 election problem from recurring..."
Explanation:
The Controversial Election of Thomas Jefferson in 1800
The answer would be Thomas Jefferson
Albert Sabin came up with an oral polio vaccine in 1962
Moctezuma was the second Aztec from 1440 to 1469 emperor and during his government, the Empire was consolidated, territorial expansion was done, and Tenochtitlan became the dominant partner of the Aztec Alliance.
Moctezuma was the son of emperor Huitzilihuitl . After his father’s death, Moctezuma's brother ruled for some years and then he was elected to power. Moctezuma solidified the alliance with neighboring states, bringing social, economical, and political reforms that were beneficial to the relations with other tribes and gave them access to exotic things such as cocoa, rubber, cotton, fruits, feathers, and seashells.
I’ve never read that story ever, maybe go search Wikipedia