It refers to a geographical and cultural area which extends from central Mexico down through Central America, including the territory which is now made up of the countries of Guatemala, Belize, Honduras, and El Salvador.
Answer:
A) to Americanize the Plains Indians.
Explanation:
~Hello there! ^_^
your question: Which official is the most powerful member of the White House..?
Your answer: The Chief of staff is the official that is the most powerful member of the White House. This person guides the White House staff.
~Hope this helps! :D