Which of the following is true of commercial radio? it heightened regional differences. the industry was monopolized by kdka for over five years. it was originally regulated by the federal government. it stimulated consumer culture and fueled fads.

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.

The 15th amendment to the u.s. constitution, ratified in 1870, deals with what issue? a. prohibition of alcohol b. voting c. declaring war d. free speech

Who was a 1920s film star who was the first male "heart throb" in film.