Complex sentence: West Presbyterian Church was organized in 1829 at 273 Bleecker Street in Greenwich Village as the North Presbyterian Church, and two years later, when its name was changed to West, it had only 18 members.
Split into simpler sentences: West Presbyterian Church was organized in 1829 at 273 Bleecker Street in Greenwich Village as the North Presbyterian Church. Two years later, when its name was changed to West, it had only 18 members.