Officially, the name of the country is The Gambia, in the vein of "the Netherlands" or "the Bronx" or "the Philippines," except that "The" is capitalized.
He did an internship in The Gambia before returning stateside.
It's acceptable, however, to refer to the country simply as Gambia.
see Nonsexist language
See regional terms.
When including the graduation years of alumni, commas are placed after the person’s name and after the year. A closing apostrophe (’), not an opening apostrophe (‘), appears in front of the date. The degree appears first, then the date of the degree.
Jane Smith, MPH ’75, associate professor, Epidemiology, said ...
John Smith, PhD ’75, MPH ’72, ...