Complex sentence: Between 1893 and 1989, about 85% of the native forests were cut; the entire landscape was transformed into farmland by extensive logging, draining of the watershed, channelization, and the construction of flood control structures.
Split into simpler sentences: Between 1893 and 1989, about 85% of the native forests were cut. The entire landscape was transformed into farmland by extensive logging, draining of the watershed, channelization, and the construction of flood control structures.