Alright, I'll help you give me a minute to remember my History haha
The Louisiana Purchase eventually doubled the size of the United States, greatly strengthened the country materially and strategically, provided a powerful impetus to westward expansion.
The answer should be D, Doubled the size of the country
Due process and equal protection under the law-- due process requires laws be carried out fairly and equally.
The laws of the US are suppose to be "blind" in particular for the justice system. Despite the sex, race, or origin of a person laws should be executed and judged equally. Despite the expectation the system does fall short because it relies on the unbiased thinking of the citizen which is difficult to come by. As a result the whole corrections system deals with the issues like the example in the question where race, ethnicity, sex, and social class can determine the outcome of arrests and ruling on laws.
The correct answer is Demilitarized zone (DMZ)
Explanation: Demilitarized Zone (DMZ), which divides the Korean Peninsula, became the emblem of the truce that ended the fighting in the Korean War (1950-53).
The location is a regular destination for American leaders who want to show their determination in front of North Korea.