Describe some of the major contributions that resulted in industrial growth, technological innovation, urbanization, and immigration? (Please help, Will give brainliest)

Which factor has played the most important role in changing the way history is studied over time?

How did the technology of the late 1800s affect the growth of cities? select one: a. cities were able to expand outward because of additions to railroads. b. electric streetcars enabled the wealthy city dwellers to move to the first suburbs. c. advances in steel and metal technology allowed for the development of the skyscraper, which allowed cities to grow upwards. d. all of these are correct.

The american civil war most former enslaved african americans in texas began making a living as