What roles do military alliances and military action play in U. S. foreign policy?

Alliances provide mutual support in the event of an attack; protecting security of entire regions; providing framework of military security through organizations such as NATO.

Explanation:

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a phrase from a poem by ralph waldo emerson about the battle of lexington and concord. emerson's words read, “here once the embattled farmers stood / and fired the shot heard round the world.”

the commander in chief