How to kill a mocking bird I’m confused on this question on who it is

After the congress of vienna europe

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.

Why did france demand that germany repay their debts in foreign currency?