Original sentence: In 2008, Barbados submited an updated claim to the United Nations Commission on the Limits of the Continental Shelf (UNCLCS) to extend its territorial waters and continental shelf (Exclusive Economic Zone) margins
Edited sentence: In 2008, Barbados submitted an updated claim to the United Nations Commission on the Limits of the Continental Shelf (UNCLCS) to extend its territorial waters and continental shelf (Exclusive Economic Zone) margins