In 1941, Secretary of the State Board of Agriculture John A. Hannah was appointed President of M.S.C. Hannah began the largest expansion in the school's history, aided by the G.I. Bill. Enacted in 1945, the law helped World War II veterans fund post-secondary educations. During this time the bulk of the South Campus was quickly built to allow for an ever-growing influx of students. One of Hannah's strategies was to build a new residence hall, enroll enough students to fill it and then use the income to start construction on a new dormitory. In the process the president built the nation's largest university housing system. Under Hannah's plan, enrollment increased from 15,000 in 1950 to 38,000 in 1965.