Given the task definition and input, reply with output. This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.

Under Walter Dill Scott's presidency from 1920 to 1939, Northwestern began construction of an integrated campus in Chicago designed by James Gamble Rogers to house the professional schools; established the Kellogg School of Management; and built several prominent buildings on the Evanston campus, Dyche Stadium (now named Ryan Field) and Deering Library among others. In 1933, a proposal to merge Northwestern with the University of Chicago was considered but rejected. Northwestern was also one of the first six universities in the country to establish a Naval Reserve Officers Training Corps (NROTC) in the 1920s. Northwestern played host to the first-ever NCAA Men's Division I Basketball Championship game in 1939 in the original Patten Gymnasium, which was later demolished and relocated farther north along with the Dearborn Observatory to make room for the Technological Institute.
What type of campus did Northwestern begin construction of during Walter Dill Scott's presidency?