| Hint | Answer | % Correct |
|---|---|---|
| Julius Caesar is assassinated by members of the Roman Senate | 44 | 89%
|
| The United Nations estimates the Earth's population at five billion | 1987 | 78%
|
| The animated series SpongeBob Squarepants debuts on television | 1999 | 67%
|
| NASA launches the world's first successful weather satellite. It transmits the first photos of Earth from space | 1960 | 56%
|
| The city of Baghdad is founded | 762 | 44%
|
| Blackbeard the Pirate dies in a battle with British Royal Navy | 1718 | 33%
|
| 9-1-1 becomes the offical national emergency telephone number in the United States | 1968 | 33%
|
| William Hamley opens a toy store in London, England. It later becomes Hamley's, one of the largest toy stores in the world. | 1760 | 22%
|
| Annie Moore becomes the first immigrant registered at Ellis Island. She is 15-years-old and from County Cork, Ireland | 1892 | 22%
|
| The powdered drink mix Kool-Ade is invented | 1927 | 22%
|
| The government of Persia formally requests all other countries call Persia by its native name, Iran | 1935 | 22%
|
| Levi Spear Parmly is credited with inventing dental floss. It is originally made of silk | 1815 | 11%
|
| The first incubator for premature babies is patented. It is created by a zookeeper and originally used for baby birds | 1881 | 11%
|
| Oil is discovered in Texas | 1901 | 0%
|