Complex sentence: At the beginning of the 18th century at the instigation of the Duke of Strelitz, Adolphus Frederick II, numerous glassworks and potash distilleries were founded in the region, but the Serrahn Hills remained unaffected due to poor road communications and its forests remained largely intact.
Split into simpler sentences: At the beginning of the 18th century at the instigation of the Duke of Strelitz, Adolphus Frederick II, numerous glassworks and potash distilleries were founded. But the Serrahn Hills remained unaffected due to poor road communications and the forests remained largely intact.