C. Nationalism convinced the people of Europe that their own nation could take on any military threat.
I'm guessing but b. or either c. idk for real
They remained in rural areas and worked at jobs such as lumbering or farming.
Answer:
Railroads improved the movement of people from one area to the other
Observation balloons gathered information about the enemy and communicated it back to the officers
Explanation:
i took the test.
it was called the Mayflower