Why was alexandria the cultural center of the hellenistic era?

Alexandria was discovered by Alexander the Great himself in 331 BCE and very immediately became the center of business and culture of the Hellenistic world beneath the Ptolemies.

Explanation:

The Hellenistic world is that world that was founded after the victories of the near east by Alexander the Great at the completion of the fourth century B.C. And his conquering, which spread from India all the channel through Egypt, split into three chief regions within 20 years later his death. And the two important areas that endured down to the first century B.C. would ought been the Syrian empire, the Seleucid empire, and the Ptolemaic empire which endured in Egypt, which was eventually earned over by Rome in 31 B.C.