The correct answer to this open question is the following.
We are talking about the Gulf of Tonkin Resolution. This resolution changed the rules of war as outlined in the U.S. constitution. With this resolution, the US Congress granted the President of the United States -in this case, Lyndon B. Jhonson- unlimited powers to stop communism in Vietnam. After the aggression of two US navy vessels stationed in the Gulf of Tonkin, Congress passed the resolution on August 7, 1964. From this point on, the US Army committed to total support of South Vietnam in the Vietnam War.
They taxed the sugar coming in from Europe
expansionist
noun
1.
a follower or advocate of a policy of territorial or economic expansion.
"he was an aggressive expansionist"
adjective
1.
relating to or characteristic of a policy of territorial or economic expansion.
"the imperial government became increasingly bent on expansionist policies"
The correct answer is A, B, C.
Answer: President Kennedy approves sending 400 Special Forces troops and 100 other U.S. military advisers to South Vietnam. On the same day, he orders the start of clandestine warfare against North Vietnam to be conducted by South Vietnamese agents under the direction and training of the CIA and U.S. Special Forces troops. Kennedy’s orders also called for South Vietnamese forces to infiltrate Laos to locate and disrupt communist bases and supply lines there.