At the conclusion of the spanish-american war, the united states
a. retreated from its efforts to gain control of overseas territories.
b. had gained an empire and new stature in world affairs.
c. was forced to give up control of cuba.
d. agreed to return control of the philippines to spain

The correct answer is B, as at the conclusion of the Spanish-American war, the United States gained an empire and new stature in world affairs.

In fact, as a result of the defeat, Spain ceded its territories of the Philippines, Guam and Puerto Rico to the Americans. In this way the US obtained territories in strategic points of the world (Caribbean, Oceania and Southeast Asia), with which its power in front of the rest of the nations was increased.

In addition, the fact of having defeated a colonial power gave the United States a new status as a world power, both politically and militarily.

nafta and the union are used as a trade between other countries these   organizations are used as spokes person for the country

d. it adversely affected american productivity