The correct answer for the question that is being presented above is this one: "Thomas Edison." Thomas Edison improved the incandescent light bulb and he made it possible to quit using oil lamps as a source of light, which sometimes unsafe.
a. Air raid on Pearl Harbor
b. nothing
c. September 1, 1939 - Germany invades Poland
d. Germany and the Soviet Union sign a non-aggression pact
I'm guessing its a and c
Answer:
Explanation:
The leading causes of the great migration were racial segregation and very poor economic conditions. The people who escaped that had to look elsewhere for a better economic base and a more tolerant society than in the south where Jim Crow laws were upheld. It is hard to say which push factor was stronger in this case because the terror was combined with very poor living conditions and the whole situation of black folks in the south was very bad.
