Complex sentence: Cape Cod is a geographic cape/island and independent land mass separated from the mainland by the Cape Cod Canal that juts out into the Atlantic Ocean in the easternmost part of the state of Massachusetts in the Northeastern United States.
Split into simpler sentences: Cape Cod is a geographic cape/island and independent land mass separated from the mainland by the Cape Cod Canal. It juts out into the Atlantic Ocean in the easternmost part of the state of Massachusetts in the Northeastern United States.