| 11. | Older canals, used for irrigation, have been unearthed in the southwestern United States.
|
| 12. | Like the southwestern United States, the EU is wrestling with an immigration crisis.
|
| 13. | It is native to the southwestern United States ( Arizona and Utah ).
|
| 14. | Diamondbacks are rattlesnakes, a fanged pit viper indigenous to the southwestern United States.
|
| 15. | It is found in northern Mexico and the southwestern United States.
|
| 16. | Hantavirus, which struck the southwestern United States three years ago, has flu-like symptoms.
|
| 17. | It was the first teacher-training school in the southwestern United States.
|
| 18. | It is native to the deserts of the Southwestern United States and Mexico.
|
| 19. | All are native to the southwestern United States and to Mexico.
|
| 20. | Neststraw is native to the southwestern United States and northern Mexico.
|
