What year did alexander the great divide the empire into four kingdoms?

Alexander the Great (356-323 BCE) of Macedon first follwed in his father’s (King Phillip II) footsteps in subduing the city-states of Greece and then lead his army on a series of campaigns which successfully conquered the then-known world from Macedon, through Greece, down to Egypt, across Persia, to India. Alexander’s tutor was the Greek philosopher Aristotle (384-322 BCE) and, as Alexander traveled, he spread Greek thought and culture in his wake, thus "hellenizing" (to make `Greek’ in culture and civilizaion) those he conquered. After Alexander’s death his Empire was divided among his four generals - the Diadochi or Successors.