A. Front is the correct answer
World War II forced Americans to confront the fact that African-Americans were dying for the United States in battle but when they came home, they were subjected to horrific discrimination.
The Executive branch must receive approval from "the Senate" when appointing heads of executive departments, ambassadors, and Federal Court Judges, since this is one of the most important examples of the system of "checks and balances" that exists in the US.
Introductory Paragraph. See, first, Writing Introductory Paragraphs for different ways of getting your reader involved in your essay. The introductory paragraph should also include the thesis statement, a kind of mini-outline for the paper: it tells the reader what the essay is about.
