Answer:
The reasons are myriad and diverse
They enforce the laws of the land, and keep everything and everyone in line.
Pablo Picasso's Guernica was a portrayal of a bombing during the Spanish Civil War and it's fame brought a lot of attention to the horrors of the war on the part of the Spanish Nationalists.
The bottom right image of the novel "Uncle Tom's Cabin" reminds me of the uproar caused 9 years before the war. The north and south both opinionated stances on the acceptance of the book due to its contents.
The top left shows The Liberator newspaper, a widely circulated anti-slavery newspaper that continued publishing throughout the war. It bashed the Constitution and went as far as calling it a pro-slavery document.
60, because you multiply the choices together 3×5×4=60
