Complex sentence: The large Fulton Center in Lower Manhattan opened in November 2014 after a $1.4 billion reconstruction project of the Fulton Street station necessitated by the September 11,2001 attacks and complicated by Hurricane Sandy in 2012.
Split into simpler sentences: The large Fulton Center in Lower Manhattan opened in November 2014 after a $1.4 billion reconstruction project of the Fulton Street station. The project was necessitated by the September 11,2001 attacks and complicated by Hurricane Sandy in 2012.