Please help just this whoever answers correctly, I will mark your answer brainliest just like I did a day ago

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.

Which best describes the impact of the crusades on european exploration?

After early colonial losses to the british in new york, a. general washington withdrew his troops to pennsylvania. b. the colonies ratified the declaration of independence. c. the continental army set up headquarters at fort lee. d. general washington set up headquarters in new jersey.