According to the preamble, the constitution's purpose was to: a. create a better government. b. establish a fair legal system. c. ensure the freedom of future americans. d. all of these choices are correct.

The answer should be D. All of these choices are correct.

d.prevent the spread of communism outside of eastern europe.

its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.