The largest tornado outbreak on record for a single 24-hour period, the Super Outbreak occurred on April 3 and 4, 1974. During that time, nearly 150 tornadoes swept across 13 central and eastern US states as well as Ontario, Canada, severely damaging approximately 900 square miles (2,330 sq km) along a total combined path length of 2,600 miles (4,180 km). The outbreak brought more violent tornadoes than had ever been observed, including 23 F4 tornadoes and how many F5s? Discuss
Source: The Free Dictionary
Guinea was ruled by a dictatorship led by 
Regarded as the greatest actor of his generation and one of the most influential actors of all time, Marlon Brando was known for his naturalistic performances. He achieved fame on Broadway in A Streetcar Named Desire, later starring in the film version. Considered the foremost practitioner of the New York Actors Studio style of “method” acting, Brando earned Academy Awards for his roles in On the Waterfront and The Godfather. Why did he refuse the latter award? 
The contact lens, a thin plastic lens worn between the eye and eyelid, usually serves the same general corrective purpose as conventional glasses, but may be worn for cosmetic or therapeutic purposes as well. Leonardo da Vinci is frequently credited with having introduced the general principle of contact lenses, but it was A.E. Fick, a Swiss physician, who made the first, albeit uncomfortable, contact lens in 1887. According to estimates, how many people use contact lenses worldwide? 
There’s no use in weeping,
Sometimes referred to as the “Lady of the House,” Jeannette Rankin was the first woman to be elected to the US House of Representatives and the first female member of Congress. Just days into her term, she drew the ire of the press by voting, along with 56 others, against the resolution to enter WWI. In 1940, Rankin was again elected to Congress and once again voted against entering a world war, though this time she was the only Congress member to do so. What was the Jeanette Rankin Brigade? 
This day, which is observed by countries all over the world, is held on 
The Carolingian king of the Franks from 768 CE until his death in 814 CE, Charlemagne united most of Western Europe under a single empire for the first time since the Romans, becoming, in 800 CE, the first Holy Roman Emperor. Charles the Great, as he is also known, instituted many judicial and ecclesiastical reforms, promoted commerce and agriculture throughout his empire, made his court a center of learning, and inspired the Carolingian Renaissance. What was notable about his style of dress? 
Montefiore was a famous 19th century British-Jewish philanthropist. He was connected through marriage to the famed Rothschild family and became affiliated with the family’s banking business. After accumulating a fortune on the London stock exchange, he retired at age 40 to devote himself to philanthropy and to securing political and civil emancipation for Jews in England, founding a hospital and girls’ school in Jerusalem in 1855. Montefiore was knighted by what queen?