Complex sentence: Four of them, "C. argyrosperma", "C. ficifolia", "C. moschata", and "C. pepo", originated and were domesticated in Mesoamerica; for the fifth, "C. maxima", these events occurred in South America.
Split into simpler sentences: Four of them, "C. argyrosperma", "C. ficifolia", "C. moschata", and "C. pepo", originated and were domesticated in Mesoamerica. For the fifth, "C. maxima", these events occurred in South America.