Complex sentence: During the early 1970s, the humorist Michel Choquette gradually put together a unique collection of comics about the 1960s by soliciting work internationally from contemporary writers and artists, 169 of whom responded.
Split into simpler sentences: During the early 1970s, Michel Choquette gradually put together this collection of comics about the 1960s. Choquette solicited work internationally from contemporary writers and artists, 169 of whom responded.