Conflict broke out because of unification issues.
During Vietnam War, US troops had the advantage of superior firepower. The correct option among all the options that are given in the question is the fourth or the last option. The United States forces did have a superior firepower but they lacked geographic knowledge of the region. This was one reason that the Vietnam forces never let the US forces have a complete victory.
A. Medicare Act
The Medicare Act was enacted under President Lyndon Johnson in the 1960's not during the New Deal.
In the United States, the Senate power of advice and consent does not apply to "executive order," since this power refers to the fact that the Senate may approve presidential appointments, such as those of a federal judge.
