How did Frederick Douglas contribute to the abolitionists’ cause. 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.

Why did the collapse of the soviet union and the power vacuum in the balkans lead to bosnian genocide?

Was the battle of iwo jima over after us troops raised the flag on mt. suribachi?