Complex sentence: However, during the Japanese occupation in World War II, a new party, the Kapisanan ng Paglilingkod sa Bagong Pilipinas (KALIBAPI), was formed, and was the only party allowed to operate during the occupation.
Split into simpler sentences: However, during the Japanese occupation in World War II, a new party, the Kapisanan ng Paglilingkod sa Bagong Pilipinas (KALIBAPI), was formed. It was the only party allowed to operate during the occupation.