Some Americans felt like American leaders did not understand _____.
1. Vietnamese nationalism
2. the domino theory
3. the policy of containment
4. the importance of preserving U.S. credibility

Respuesta :

Hey there!

I believe the correct answer is 4. the importance of preserving U.S. credibility.                                       

i hope this helps and have a very great day! :D
most likely Vietnamese nationalism