What event prompted the United States to increase its military involvement in Vietnam?

the signing of the Geneva Accords

Vietnam's independence from France

Vietnamese unification under the communists

the attack on the USS Maddox

Option: The attack on the USS Maddox

Explanation:

The Vietnam war began in the 1960s when the communist government of North Vietnam acted against South Vietnam and its ally, the United States. About 3 millions of people died in the Vietnam War. The United States military involvement increased in Vietnam after the USS Maddox attacked by North Vietnamese patrol boats in the Gulf of Tonkin.