mexico
The Rocky Mountains qualify as such.
The cultural region that spans Mexico, Central America, the Caribbean and South America is known as Latin America.
Coastal Plain
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New Mexico has a larger area than Louisiana (if that is what you mean by "stretches").
New Mexico is further north than Louisiana.
The largest trench in North America is the 'Middle America Trench'. It stretches from central Mexico to Costa Rica and a number of big earthquakes have been in that region.
Sinai
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gulf of mexico
It stretchers along the Gulf of Mexico