Complex sentence: Development in the area accelerated when the southern terminus of the Staten Island Railway was moved from Eltingville to Tottenville in 1860; the Prince's Bay station crosses underneath Seguine Avenue, formerly known as Prince's Bay Road.
Split into simpler sentences: Development in the area accelerated when the southern terminus of the Staten Island Railway was moved from Eltingville to Tottenville in 1860. The Prince's Bay station crosses underneath Seguine Avenue, formerly known as Prince's Bay Road.