Two reasons why america entered world war 1

1: The US believed, correctly, that Germany violated its pledge to suspend unrestricted submarine warfare in the North Atlantic

2: The US accused Germany of working to bring Mexico into the war against the US.

fourteenth amendment

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.