Guatemala and Belize.
Yucatán Peninsula
There isn't any. The Yucatan Peninsula is shared among the countries of Mexico, Guatemala and Belize.
It is the Yucatan peninsula, spanning southeastern Mexico, Guatemala and Belize.
Both Belize and Guatemala qualify as such.
The Yucatan peninsula extends from the main body of Mexico into the Gulf of Mexico. To a certain extent, the nations of Belize and Guatemala are part of this peninsula.
Part of it is covered by southeastern Mexico, all of Belize and northern Guatemala.
The Mayas lived in present day Honduras, Belize, Mexico, Guatemala, and El Salvador. But most now are living in Guatemala.
It is the region that spans the Yucatan peninsula, bordering the Gulf of Mexico, Caribbean Sea, Guatemala and Belize.
On the Yucatan peninsula, between Mexico, Belize, Guatemala and El Salvador.
Belize is bordered by Mexico, Guatemala, and the Carribean Sea and Yucatan Peninsula. Hope this helped!
Mexico shares the southeastern Yucatan Peninsula with both Belize and Guatemala. It also shares, but in name only, the Baja California Peninsula, with the United States.