I will give you b if your answer is correct and right so please give the right answer please?

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.

What industry was exempt from the child-labor laws passed in the factory act of 1833?

What was a major failing of the united states government under the articles of confederation?