http://en.wikipedia.org/wiki/Microwave_oven It tells you the answer in the history section of the page within the first three sentences.
Gadsden Purchase
No part of America invented athletics.Athletics were invented (or first recorded as a competitive event) in ancient Greece, the most famous event being the Ancient Olympic games.
The whole event resulted from a minor miscommunication.
There is no real answer to this question as history is not invented, nor does it specify which "black history" is being referred to (African or African/ American)
tundra doctrine
Chinese Revolution
The historical event which resulted in the creation of world-famous chocolates in the Basque speaking city of Bayonne was the Spanish Inquisition.
XYZ Affair
We don’t have the quote.
trail of tears
Because it was a catastrophic event that resulted in thousands of people being left without food, shelter or water. Katrina killed 100's if not thousands of people.
German invaded poland