Summarize Roosevelt's accomplishments described in this paragraph.

Beginning in 1925, Roosevelt spent most of his time in the Southern United States, at first on his houseboat, the Larooco. Intrigued by the potential benefits of hydrotherapy, he established a rehabilitation center at Warm Springs, Georgia, in 1926. To create the rehabilitation center, he assembled a staff of physical therapists and used most of his inheritance to purchase the Merriweather Inn. In 1938, he founded the National Foundation for Infantile Paralysis, leading to the development of polio vaccines.

Roosevelt established a rehabilitation center in Georgia and founded the National Foundation for Infantile Paralysis. The latter accomplishment led to the development of polio vaccines.