Gulf of Mexico numerous bays and smaller inlets. A number of rivers empty into the gulf, most notably the Mississippi River and Rio Grande in the northern gulf, and the Grijalva and Usumacinta rivers in the southern gulf. The land that forms the gulf's coast, including many long, narrow barrier islands, is almost uniformly low-lying and is characterized by marshes and swamps as well as stretches of sandy beach. The Gulf of Mexico is an excellent example of a passive margin. The continental shelf is quite wide at most points along the coast, most notably at the Florida and Yucatán Peninsulas. The shelf
State of Mexico State of Mexico The State of Mexico (, ) is one of the 32 federal entities of Mexico. It is the most populous, as well as the most densely populated state. It is divided into 125 municipalities and its capital city is Toluca de Lerdo. The State of Mexico is often abbreviated to "Edomex" from "Estado de México" in Spanish, to distinguish it from the name of the whole country. It is located in South-Central Mexico. It is bordered by the states of Querétaro and Hidalgo to the north, Morelos and Guerrero to the south, Michoacán to the west, Tlaxcala