what feature makes up much of the U.S border with Mexico

What river do you see on this map that makes up part of this border?

http://www.worldatlas.com/webimage/countrys/namerica/usstates/artwork/rivers/riogrand.htm

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Qhat border makes up much of mexico

The feature that makes up much of the U.S. border with Mexico is a river called the Rio Grande (or Rio Bravo del Norte in Spanish). To get this answer, you can follow these steps:

1. Open a search engine like Google.
2. Enter the query "What feature makes up the U.S. border with Mexico?"
3. Look for reliable sources such as official government websites, encyclopedias, or reputable news outlets.
4. In the search results, you will find information that the U.S.-Mexico border is primarily formed by the Rio Grande.
5. Click on the relevant source or link to access more details about the topic if desired.

Remember to critically evaluate the sources to ensure their credibility and accuracy.