Complex sentence: It was an ancient city of the Volsci tribe, and its status was influential in the time of King Ancus Marcius, enough to be on a par with Rome and has been the site of two historical battles in 1744 and 1849.
Split into simpler sentences: It was an ancient city of the Volsci tribe, and its status was influential in the time of King Ancus Marcius, enough to be on a par with Rome. It has been the site of two historical battles, in 1744 and 1849.