How did the vietnam war influence the foreign policy of richard nixon

He developed a more limited and strategic policy for the use of American troops.

Explanation:

As president, Nixon publicly said his strategy was a mixture of negotiating and Vietnamization, meaning the plan to prepare the South Vietnamese to manage their own defense and consequently allowing American troops to withdraw. However, Nixon did heighten the dispute by encouraging secret bombing raids in Cambodia, also sending ground troops, as well as in Laos, all aimed to disrupt North Vietnamese and Viet Cong troops.

the answer is a. the declaration of independence.

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