What main idea can be found in both

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.

there were abundant sources of fuel nearby

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.

there were 6 major base camps.   the base camps were located in alva, fort reno, fort sill, the madill provisional internment camp headquarters, mcalester and camp gruber.