You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[EX Q]: Category: HISTORIC LASTS 
Clue: In the "thanks a lot, fellas" department, Mongolia was the last country to join this group--August 9, 1945
[EX A]: the allies

[EX Q]: Category: ANIMALS 
Clue: Odobenus, the genus name of this animal, comes from the Greek for "one who walks with his teeth"
[EX A]: walrus

[EX Q]: Category: NATIONAL HEROES 
Clue: This country's national heroes include Juan Pablo Duarte & Sammy Sosa
[EX A]:
dominican republic