Alexander did not name a successor.
The candidates - his top Macedonian generals - fought each other over a share of the cake. As it settled down, these shares became roughly Egypt and Palestine, Syria, Asia Minor and mainland Greece. Parts of these territories changed hands from time to time, and their rulers also changed, at least in Greece and Asia Minor. Ptolemy in Egypt was the first to adopt the title of king, and the others followed. Three dynasties endured - The Macedonian, Ptolemy (down to Cleopatra) and the Seleucids in Syria.
The Roman conquests progressively put an end to them during the second and first centuries BCE, and they became Roman provinces. The eastern conquests were lost progressively - Persia, what is today Pakistan, and Central Asia quickly. However although there is no written record, it is apparent from finds of coinage that there was an independent Greek kingdom in the Afghanistan area long after it was thought to have reverted to native rule.
Julius Caesar tried to emulate Alexander's eastern part of the empire with an expedition to conquer the Parthians who had taken it over. On the eve of departure he was assassinated.
Incidentally, Alexander's body was sent back to Macedonia in a vat of honey. Seeking to bolster his authority and preeminence, Ptolemy hijacked it to Alexandria and had it mummified. It was still there when Octavian Augustus captured Alexandria in 30 BCE after defeating Antony and Cleopatra at Actium. What happened to it is unknown.
cry and yell
The death of Alexander the Great caused his unified empire to be split three ways under his top generals. This caused a great deal of unrest in what was Alexander's empire.
He liked trains to much
The assault by Alexander the Great, who replaced the empire with his own Macedonian Empire. It was split up into several Hellenistic kingdoms after Alexander's death.
You've got your empires mixed. It was the Macadonian Empire of Alexander the Great that was divided into three after Alexander's death in 323 BC.
because his father was dieing
He remained as king of his empire in Asia until his death in 323 BCE.
The only Greek Empire was the one created by Alexander the Great. It was not a successful empire, as it did not survive his death.
In 336 BCE after his father's death, when he took over his father's plan to conquer the Persian Empire.
He had not nominated an heir by the time of his premature death (32) and hs generals carved up his empire amongst them.
After his death.
after his death
Alexander the Great, also known as Alexander III of Macedon, became king after the death of his father, King Philip II. One thing Alexander the Great was known for was his conquering most of the known world of his time.