BSA is one.
Awl
The only scottish port with 3 letters in AYR. This is a common question found is crossword puzzles.
Barbara
Iowa, Ohio, and Utah
Elx is a city in Spain
There are no countries that have only 3 letters in their name.
Laos (Lao People's Democratic Republic)
Barbara
Laos (Lao People's Democratic Republic)
A snake with a three letter name is a Boa
Tan and red that is it