please rewrite the paragraph more formal and precise

The okefenokee is the biggest swamp in North America.part of it was helped by Franklin Roosevelt when he took a bunch of it and made it into a wildlife refuge before that people could take away trees away now the swamp has loads of animals

The Okefenokee Swamp stands as the largest swamp in North America. A significant portion of this swamp was meticulously conserved as a wildlife refuge, thanks to the efforts of Franklin Roosevelt. Prior to this initiative, individuals were permitted to extract trees from the area. Presently, the swamp thrives with an abundance of diverse animal species.

The Okefenokee is the largest swamp in North America. A portion of its area was converted into a wildlife refuge with the assistance of Franklin Roosevelt. Previously, individuals had the freedom to extract trees from the swamp. However, due to the establishment of the refuge, the Okefenokee now serves as a habitat for numerous animal species.

The Okefenokee Swamp is the largest swamp in North America. A significant portion of this swamp was conserved and transformed into a wildlife refuge during the administration of Franklin D. Roosevelt. Prior to this conservation effort, logging activities resulted in the removal of trees from the area. As a result of the preservation efforts, the Okefenokee Swamp now boasts a thriving habitat for a diverse range of animal species.