Complex sentence: It comprised the Philippine Islands, Guam and the Mariana Islands, the Caroline Islands (Palau and the Federated States of Micronesia) and for a period of time, Sabah, parts of Formosa (Taiwan) and the Moluccas.
Split into simpler sentences: It comprised the Philippine Islands, Guam and the Mariana Islands, the Caroline Islands (Palau and the Federated States of Micronesia). For a period of time, it also included Sabah, and parts of Formosa (Taiwan) and the Moluccas.