Which elements in pop art like by roy litchensteins reverie are used in billboards and comic books

Lichtenstein's comic book style is characterized by the use of a dot pattern, known as the Benday dot. He started using this system in 1961, and, although it became a signature element of his art, the system had been invented in 1879 and had already been used in comics, newspapers and billboards. Lichtenstein made the dots very big, almost to the point of exaggeration. The use of thick lines, as well as the bright colors are also elements that appear in billboards and comic books.  

richard milhous nixon (january 9, 1913 – april 22, 1994) was the 37th president of the united states, serving from 1969 to 1974, when he became the only president to resign (quit). he is also known for corruption and the watergate scandal which resulted in the public losing trust in him and his resignation.

lancelot said to the beautiful ellen i c u r a b u t l n (i see you are a beauty lancelot was the greatest and worst of the knights who became the king's champion and undertook quests in the king's name. he became the adulterous lover of queen guinevere, and they had a son named galahad.