Alexander the Great left no heir to his immense empire. In Bactria (the
modern Bokhara), Asia Minor, Armenia, Syria, Babylonia, and above all in
Egypt, Greek kingdoms were established as centers of science, art, and
learning, from which Greek light radiated into the world around them. In
Europe, besides that of Macedon, a kingdom of Thrace, stretching beyond
the Danube, another in Illyria, and another in Epirus, were under the
rule of Greek princes. To Alexander the world owed, among other great
cities built by him or his successors, Alexandria in Egypt, and Antioch
in Syria.