Complex sentence: During the manhunt, the authorities asked residents of Watertown and surrounding areas, including Boston, to stay indoors, and the public transportation system and most businesses and public institutions were shut down, resulting in a deserted urban environment of historic size and duration.
Split into simpler sentences: During the manhunt, authorities asked residents of Watertown and surrounding areas, including Boston, to stay indoors. The public transportation system and most businesses and public institutions were shut down, creating a deserted urban environment of historic size and duration.