Respuesta :
This period begins with the death of Alexander and ends with the Roman conquest. Roman Greece is usually considered to be the period between Roman victory over the Corinthians at the Battle of Corinth in 146 BC and the establishment of Byzantium by Constantine as the capital of the Roman Empire in AD 330. Hope this helped!!! :)
Alexander the Great, was most responsible for uniting Greece and building an empire.
Explanation
Alexander the Great, who dreamed of conquering all lands in the world became the leader of Greek Kingdom on 336 BC.
Alexander ruled over Greece which he extended till India. This period is known as "Hellenistic period” spreading Greek culture throughout.
At a very young age, he created one of the largest empires of the world which still marks in history.
After his death, the Romans conquered his empire.