answer: historical reachers use scrap books, speeches, journals, letters and diaries, photograges, audio recordings, video recordings, films, archives and manuscript material, published books, newspapers and magazine clippings published at the time.
Example: Speeches: mlk’s speech. Newspaper: news in the newspaper about Rosa parks. (Thats only two but you see where I’m going)
The correct answer is monochromatic because on the left, it uses multiple colors, and on the right, it uses multiple colors as well, so there you go.