FDR's Cabinet refers to the group of advisors selected by Franklin D. Roosevelt during his presidency, which lasted from 1933 to 1945. This Cabinet played a crucial role in helping the president navigate the Great Depression and World War II, providing him with expertise and support across various executive departments. The diverse composition of FDR's Cabinet reflected a range of viewpoints and backgrounds, influencing the development of significant policies and initiatives during a transformative era in American history.