Colorado
The Colorado River.
Colorado
The two rivers are the Colorado River and the Delaware River, which share their names with Colorado and Delaware respectively.
The name of a country bording the United States is New Mexico
united states
Mississippi.
Missouri
Maine
There are many locations in the United States which have the name River Valley. One area is located in the state of Wisconsin, another is in the state of Minnesota. In order to located the River Valley one is looking for, more specific information would be needed.
The full name of the state in the United States of America is Maryland.
New Mexico. Mexico is a country bordering the United States and New Mexico, a state in the the United States, has the same name. The only state in the US that has the name of a country that borders the US in it is New Mexico. The other country is Mexico.