Complex sentence: In 2009, the New York-based Anita Kaufmann Foundation and Epilepsy Association of Nova Scotia joined to launch Purple Day internationally and increase the involvement of numerous organizations, schools, businesses, politicians and celebrities around the world.
Split into simpler sentences: In 2009, the New York-based Anita Kaufmann Foundation and Epilepsy Association of Nova Scotia joined forces to launch Purple Day internationally. The combined efforts of AKF and EANS have led to the involvement of numerous organizations, schools, businesses, politicians and celebrities around the world.