Answer:
Harrisburg is the capital of Pennsylvania.
People used to believe the earth is flat! (some people still do)
Eratosthenes
Using the knowledge that the Sun is very far away, the ancient Greek geographer Eratosthenes performed an experiment using the differences in the observed angle of the Sun from two different locations to calculate the circumference of the Earth.
New Deal Program was the overall program that conisted of smaller program to aid the recovery of the U.S economy.