Complex sentence: The passage to Editorial Frontera saw the publication of some of the most important series by Pratt: these included "Junglemen" (written by Ongaro), "Sgt. Kirk", "Ernie Pike" and "Ticonderoga".
Split into simpler sentences: The passage to Editorial Frontera saw the publication of some of the most important series by Pratt. These included "Junglemen" (written by Ongaro), "Sgt. Kirk", "Ernie Pike" and "Ticonderoga".