Who invented comic books?

In 1827, Switzerland's Rudolphe Töpffer created a comic strip and continued on to publish seven graphic novels. In 1837, "The Adventures of Obadiah Oldbuck" was published by Rudolphe Töpffer and it is considered the earliest known comic book. In 1842, "The Adventures of Obadiah Oldbuck" became the first comic book published in the United States. "Obadiah Oldbuck" was a forty page book. Each page had several picture panels with accompanying text underneath.