Answer:
. Galileo Galilei was the first astronomer to use a telescope to study the heavens. Galileo made a number of observations that finally helped convince people that the Sun-centered solar system model (the heliocentric model), as proposed by Copernicus, was correct.
Explanation:
Lots of people were dead so they wasn’t anyone to farm or work
I guess the answer to the blank will be:
During the second Red Scare public and government suspicious of Communism led to the blacklisting of people in various industries.
