Complex sentence: In the 18th Century, an earthwork fortification was constructed at the site of Dumpling Rock, which overlooks the strategic East Passage toward Newport, and this fort was occupied by American, British and French forces for various periods of time during the Revolutionary War.
Split into simpler sentences: In the 18th Century, an earthwork fortification was constructed at the site of Dumpling Rock, which overlooks the strategic East Passage toward Newport. This old fort was occupied by American, British and French forces for various periods of time during the Revolutionary War.