Congress called for a convention to be held in philadelphia in 1787 in order to

a) declare independence from england.

b) revise the articles of confederation. c) establish a new constitution for the united states.
d) direct the revolutionary war effort against england.

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.