D. research towards preventing and curing disease.
hope this helps!
I'm pretty sure its the 'Warsaw Pact'
Answer: Homogamy
Explanation:
Principle of homogamy is defined as the concept in which like quality attracts similar quality. The person have similar expectation about role through like attracts like characteristics.
According to the question, principle of homogamy is displayed through scenario of Carlos because even though he has dated different cultural, racial and ethical background women, he married a woman belonging to his town .He was attracted to marry the similar ethical and cultural background woman to which he belong due to like-attract-like feature.
If the Confederacy had been a separate nation, it would have ranked as the fourth richest in the world at the start of the Civil War. The slave economy had been very good to American prosperity. By the start of the war, the South was producing 75 percent of the world’s cotton and creating more millionaires per capita in the Mississippi River valley than anywhere in the nation. Slaves represented Southern planters’ most significant investment—and the bulk of their wealth