Well Greece is in the western world, Europe in factwrong---philosophically---the "western world"
developed from the GREEK philosophers.
Alexander ("da great"--no less) had a very concrete notion that he would bring all the
"BARBARIANS" to wit, anyone who did not
speak greek, into GREEK CULTURE as described by PLATO. Read Plato's "Republic" The Roman empire was quite
an empire (do not employ hackneyed phrases)