Complex sentence: Greyhound does not serve the states of Nebraska, North Dakota, or South Dakota in the continental United States nor the Provinces and Territory of New Brunswick, Newfoundland, Nova Scotia, Nunavut, and Prince Edward Island in Canada.
Split into simpler sentences: Greyhound does not serve the states of Nebraska, North Dakota, or South Dakota in the continental United States. It also does not provide services to the Provinces and Territory of New Brunswick, Newfoundland, Nova Scotia, Nunavut, and Prince Edward Island in Canada.