I imagine Teddy Roosevelt would've enjoyed a bunch of these with his Roughriders after successfully charging San Juan Hill... and his coke would've had a little something extra in it! Alas, the Coca-Cola company has changed their recipe to the present form, so we're just left with a great time-tested cocktail to enjoy.
1 oz Expedition Rum
3 oz Coca-Cola
Garnish: lime wedge
Add all the ingredients to a highball glass filled with ice. Garnish with a lime wedge. Enjoy!