Complex sentence: In October 2010, Darren Aronofsky was hired to direct the film, but the project was delayed following Aronofsky's departure and the 2011 Tōhoku earthquake and tsunami in March 2011.
Split into simpler sentences: In October 2010, Darren Aronofsky was hired to direct the film. The project was delayed following Aronofsky's departure and the 2011 Tōhoku earthquake and tsunami in March 2011.