Here is your monthly dose of history for November. What exactly happened in the world on November 21st? Time to find out!

November 21st, 1620: There will no doubt be a debate over whether or not  this event happened on the 21st or not. However, factoring in Old Style and New Style dates, I can assure you that in our time, the Mayflower Compact was signed by the settlers of the Plymouth Colony.

November 21st, 1783: The first ever untethered hot-air balloon takes flight in Paris, France.

November 21st, 1877: Thomas Edison announces his invention of the phonograph.

November 21st, 1905: Albert Einstein publishes his paper on inertia and energy, thus creating the formula e=mc^2.

November 21st, 1953: The Piltdown Man skull artifact is discovered to be a hoax.

November 21st, 2002: NATO invites Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia to join the defense organization.