What country is just south of the United States? It’s Mexico! Mexico is part of the continent North America.
Mexico is shaped like a hook with a wide top. Like the U.S., it has water on two sides. On its west side is the Pacific Ocean. On its east side is the Gulf of Mexico.
The bottom end of the hook curves north. This part of Mexico is called the Yucatan Peninsula. A peninsula is a piece of land that has water on most sides. The Yucatan Peninsula has the Gulf of Mexico on its west and north sides. It has the Caribbean Sea on its east side.