The correct answer to this open question is the following.
The question does not provide options or another specific reference. However, we can comment on the following.
Abraham Lincoln considered that the problems that couldn't be solved individually were the issue of slavery in the southern states, the unresolved conflicts that the entrance of Nebraska, Missouri, and Kansas to the Union, and the idea of some states to secede from the Union.
Those are my three examples.
Abraham Lincoln was very aware of those above-mentioned issues. He even expressed in one of his speeches as a Republican candidate that "A house divided against itself, cannot stand."
U.S. Commodore George Dewey (1837-1917), in command of the U.S. Asiatic Squadron anchored north of Hong Kong, was ordered to capture or destroy the Spanish Pacific fleet, which was known to be in the coastal waters of the Spanish-controlled Philippines.
If you're a member of the U.S. Navy, your organization is part of the "<span>(D.) Department of Defense." since this Department is in charge of all military branches. </span>
Back formation was used to form the word subculture.
back formation
<u>Explanation:</u>
A subculture is a gathering of individuals inside a culture that separates itself from the parent culture to which it has a place, frequently keeping up a portion of its establishing standards. So to a word with a word subculture, the back development will be the ideal match to interface between them.
Subculture can likewise be communicated as subsociety, human advancement, culture, life, way of life, society. customs, habits, mores, values. old stories, legacy, inheritance, convention.
Likewise, subculture would remember contrasts for intrigue, practices or convictions, similar to religion, ethnicity, and social or monetary status. So the word that is framed from a previously existing word from which it gives off an impression of being a subordinate, will shape the word subculture.