Complex sentence: Once his ice had chilled the drinks and preserved the food of many Americans, it quickly became a highly desired commodity, and this commodity was supplied by ice harvesting which was done on frozen over fields and bodies of water as well as ice factories.
Split into simpler sentences: Once his ice had chilled the drinks and preserved the food of many Americans, it quickly became a highly desired commodity. And this commodity was supplied by ice harvesting which was done on frozen over fields and bodies of water as well as ice factories.