Answer:
The advent of the car improved the lives of millions of people in North America and Europe. People were able to have a personal means of transportation. It contributed to urbanization and expansion of cities, as people did not have necessarily to live near their workplace anymore and they could move faster around the city.
Explanation:
I think it was called the slave triangle..
sorry not certain
The answer is B. Development of railroad systems.
The life for african americans changed with the movement sparked by matin luther king