Complex sentence: Construction of a barge canal to the Intracoastal Waterway from the Atlantic Ocean (for power plant oil shipments) cut off the northern half of the island for many years and to this day it remains slightly less developed with few areas remaining cattle pasture or citrus land.
Split into simpler sentences: Construction of a barge canal to the intracoastal waterway from the Atlantic Ocean (for power plant oil shipments) cut off the northern half of the island for many years. To this day, the northern portion of the island remains slightly less developed with a few areas remaining cattle pasture or citrus land.