From 431 to 404 B.C. the Peloponnesian War wasted Greece.
Meanwhile to the north of Greece, the kindred country of Macedonia was rising slowly to power and civilization. The Macedonians spoke a language closely akin to Greek, and on several occasions Macedonian competitors had taken part in the Olympic games.
In 359 B.C. a man of very great abilities and ambition became king of this little country—Philip. Philip had previously been a hostage in Greece; he had had a thoroughly Greek education and he was probably aware of the ideas of Herodotus—which had also been developed by the philosopher Isocrates—of a possible conquest of Asia by a consolidated Greece.
He set himself first to extend and organize his own realm and to remodel his army. For a thousand years now the charging horse-chariot had been the decisive factor in battles, that and the close-fighting