An amendment to the US Constitution must be ratified by what fraction of all the states?

More Questions:

How many dots are there on a pair of dice?

What is the name of the musical instrument which is a combination of two small drums, one bahina and the other dahina?

According to legend, what outlaw killed one man for each of the 21 years he lived?

In what year did the BBC debut the “Top Gear” TV series?

What pitcher with four World Series rings its nicknamed "El Duque"?

What festival was billed as "Three Days of Peace and Music"?

What year did the first "Where's Waldo?" illustrated book hit the shelves?

What D.H. Lawrence novel with a colorful title was banned in the U.K. following a 1915 obscenity trial?

What is isolophobia the fear of?

What year marked the appearance of Betty Boop?

Which pop singer refers to her fans as "little monsters"?

What object lands in Donnie Darko's bedroom?

Who founded the John Birch Society?

Which leader’s statue was pulled down from it’s place in red Square in 1991?

In 1901, William McKinley was assassinated in which US state?