Animal Trivia: Fish travel in schools, whales travel in pods or ----------?

Questions

In Greek mythology, who was the Muse of Tragedy?

In which year did the Confederate forces surrender, to end the U.S. Civil War?

What major British disaster occurred in Beauvais, France, in 1930?

Who was the second Soviet cosmonaut to successfully orbit the Earth?

In which year was Leon Trotsky killed?