Margaritas [Photo Credit & Copyright: Nick C. Bumstead]
The Mexico side of the cocktail equation seems easy, especially for their first game. It must be the margarita. Keep it simple and classic with 2 oz. tequila, 0.75 oz. Cointreau, 0.75 oz. fresh lime juice, 0.25 oz. of simple syrup or agave nectar, and a lime wheel for garnish.
Try mixing it up with a smokey mezcal like Vida from Del Maguey, Dry Orange Curacao instead of Cointreau. Here's another recipe.
The Cameroon side of the draw is a little tougher. The beer route might be a good call. Grab a crisp and light pilsner type ale, like their Satzenbrau. Cocoa is also produced in Cameroon, so perhaps a more creative idea would be a cocktail with crème de cacao. Perhaps the 20th Century by Jayson Wilde of Bourbon and Branch in San Francisco with 1.5 oz. gin, 0.75 oz. Lillet, 0.5 oz. creme de cacao, 0.75 oz. of fresh lemon juice and garnish with a lemon twist. It is warm outside after all and we don't want to go too heavy and chocolatey.