Question

Which incident gave President Johnson the opportunity to increase American

engagement in Vietnam?

1. The Soviets secretly placed dozens of nuclear missiles there

2. The North Vietnamese attacked American ships in the Gulf of Tonkin

3. China invaded South Vietnam with North Vietnamese forces

4. The Viet Cong appealed to the United States to support their cause

Answer 1

Number 2.

Step-by-step explanation:

Just found online.

Answer 2

2. The North Vietnamese attacked American ships in the Gulf of Tonkin

Step-by-step explanation:

In early August 1964, two U.S. destroyers stationed in the Gulf of Tonkin in Vietnam radioed that they had been fired upon by North Vietnamese forces. In response to these reported incidents, President Lyndon B. Johnson requested permission from the U.S. Congress to increase the U.S. military presence in Indochina

Hope this helped you!!