who discovered the black hole
Albert Einstein
72,098+604
72702
what produces light
the light bulb
how long was Barack Obama president
8 years
200
200
who was the first woman to fly solo across the Atlantic Ocean
Amelia Earhart
809,708,890+456
809709346
who invented the camera
Thomas Edison
who discovered America
Christopher Columbus
300
300
who was the first African american president
Barack Obama
890,545/5
178109
who invented the telephone
Alexander graham bell
who created star wars
George Lucas
400
400
what year did George Washington die
1799
∞/6
∞
who invented water color
William Reeves
what do you call the process plants use light for.
photo synthesis
500
500
how many planets are there (no Pluto)
8 planets
360,312/6
60,052
what takes pictures
a camera
who was the 16th president of the USA
Abraham Lincoln
100
100