May Day, as an international workers" celebration, dates back to what 1886 event?

More Questions:

What soccer team won the Premier League in 2004?

What type of cherries are used for Kriek lambics?

What does a player generally use for a long fairway shot in golf - a wood or an iron?

What color collar does Mickey Mouse's dog Pluto typically wear?

By what name is the author Theodor Geisel better known?

How many US state capital cities lie on the Mississippi River?

Which country deliberately introduced myxomatosis to reduce its rabbit population?

What color is soapstone when it is first mined?

A bar that appears over a Roman numeral indicates what?

Who played Butch Cassidy?

Which rap star was born Cordozar Calvin Broadus, Jr.?

Who played the role of Honey Rider in the first James Bond movie?

What TV sidekick was portrayed by Jay Silverheels?

The TV show "Frasier" ran for how many seasons?

Who was the first British monarch to live in Buckingham Palace?