What were the reasons for us neutrality during the 1920s and 1930s Need help please

they remained in rural areas and worked at jobs such as lumbering or farming.

these civilizations were located around fertile rivers, where they could produce an abundance of crops

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.