HELP ME 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 was one cause of the decembrist revolt? a. the desire for a constitutional monarchy b. the need for workers’ reforms c. the creation of a new railway line d. the outcome of the crimean war

What affected the second industrial revolution have on transportation