Complex sentence: In 1630, Mataram crushed a rebellion in Tembayat (southeast of Klaten) however in 1631-36, Mataram had to suppress the rebellion of Sumedang and Ukur in West Java.
Split into simpler sentences: In 1630, Mataram crushed a rebellion in Tembayat (southeast of Klaten). However, in 1631-36, Mataram had to suppress the rebellion of Sumedang and Ukur in West Java.