Complex sentence: During the 19th century Taiping Rebellion, the rebel Taiping state occupied much of Jiangnan and eventually made Nanjing its capital, though the area also suffered much damage as the Rebellion was quelled and Manchurian rule restored.
Split into simpler sentences: During the 19th century Taiping Rebellion, the rebel Taiping state occupied much of Jiangnan and eventually made Nanjing its capital. The area suffered much damage as the Rebellion was quelled and Manchurian rule restored.