1907
1916
1923
1938

2. In 1945, the first attempt to add fluoride in a U.S. city's water supply in order to reduce tooth decay took place in what city?

Boise, Idaho
Springfield, Illinois
Grand Rapids, Michigan
Charleston, Virginia

3. What Cuban leader did Fidel Castro overthrow when he took power in 1959?

Mario G. Menocal
Carlos M. Cespedes
Gerardo Machado
Fulgencio Batista

4. What was the term used for U.S. soldiers who crawled through the Viet Cong's underground bunkers during the Vietnam War?

channel diggers
tunnel rats
moles
guerilla chasers

5. How old was Nelson Mandela when he was released from Victor Verster Prison in 1990?

59
64
71
79

Score =
Correct answers: