Why did the united states us chemical warfare during the vietnam war?

To expose the enemy

Explanation:

The chemical agents burned the vegetation and that exposed the position of the enemy and their hiding places, the main one was the herbicide known as Orange agent.

d) post-world war i

not really a history or a question at all.

explanation:

maybe this isn't the best place to ask this, maybe a social media platform like twitter or instagram? -austin