Which kingdoms succeeded the empire of alexander the great after his death in 323 bc

Alexander the Great did not divide up the empire into four kingdoms.  

It was divided up into "3" kingdoms after he died.

Alexander's generals divided up the kingdom, and three major powers were formed.

1. Antigonid Dynasty-Greece

2. Ptolemaic Dynasty-Asia

3. Seleucid Dynasty-Egypt

They was split up however each ruler wanted them all back together causing constant war causing the "FALL OF THE GREEK EMPIRE"

Each of the three kingdoms was conquered by Rome

i think the answer is the one about environmental and social health.

hope this