(A) ** the Spanish American War.
(B) the impeachment of Andrew Johnson.
(C) the reforms of Progressive-era politicians.
(D) the monopolies created by Rockefeller and Morgan.
EXPLANATIONS BELOW
Concept note-1: -These two were fighting a circulation battle in New York City. Pulitzer owned the New York World, and Hearst the New York Journal. Through their disregard for responsible journalism, the two men are commonly credited with leading the USA into the Spanish–American War.
Concept note-2: -Led by newspaper owners William Randolph Hearst and Joseph Pulitzer, journalism of the 1890s used melodrama, romance, and hyperbole to sell millions of newspapers–a style that became known as yellow journalism.
Concept note-3: -yellow journalism, the use of lurid features and sensationalized news in newspaper publishing to attract readers and increase circulation.
Concept note-4: -Yellow journalism marked by sensationalist stories, self-promotion. William Randolph Hearst, publisher of the New York Journal, and his arch-rival, Joseph Pulitzer, publisher of the New York World, are credited with the creation of yellow journalism.