Explain the importance of House of wisdom

What directive in source a might have been at the root of the action described in source b?

List two inventions that were invented in the united states before the american civil war

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.