Sentence:  For we must number here not only the names of Bushnell , Clarke , and Rauschenbusch , not to mention those of `` the Chicago School '' and Macintosh , but those of the brothers Niebuhr and ( if <WSD>America</WSD> may claim him ! ) 
Meaning of the word marked with <WSD> tags:  North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776