What changes occurred when human civilizations evolved from hunter-gatherers to settled societies?

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.

How does the pyramid of giza include art, science, math, or a need for infrastructure?

What is the orthodox interpretation of why the cold war started