sentences:  The underwater site of , located in 1997, is on the National Register of Historic Places.The American Revolutionary War, which began in April 1775 with the Battles of Lexington and Concord, widened in September 1775 when the Continental Army embarked on an invasion of the British Province of Quebec.The province was viewed by the Second Continental Congress as a potential avenue for British forces to attack and divide the rebellious colonies, and was at the time lightly defended.