Who and why was franklin d. roosevelt important? best answer gets brainliest

Franklin Delano Roosevelt is currently the longest serving president. He:

- Established the Federal Deposit Insurance Corporation, which put more trust into banks during the Great Depression, for it promised to reimburse anyone who loses money via back emergency.

- Established the Civil Conservation Corps which, over 9 years, employed millions of young men to perform manual labor during the Great Depression, a time where work was scarce.

- Unemployment rates reached 25% while he was president. By the end of his presidency, it had gone down to 1.9%

- Established the Social Security Act, which provided welfare to the elderly, poor, and sick.

Ataxation measure enacted to raise revenues for a standing british army in america