For two years (336-334 BC), Alexander managed to restore the intermittent power of the Macedonians in Greece and break barbaric Thracian tribes that threatened Macedonia to the north. Combining almost all of Hellas under his rule, Alexander realized the idea of his father – made ??a campaign against the Persian Empire – a longtime opponent of the Greek states. In this campaign, Alexander was able to demonstrate his exceptional leadership talent that brought him cult fame as the greatest conqueror.
In 334 BC, Alexander’s troops crossed into Asia through the Hellespontine strait and moved inland to the Persian dominions. As a result of the battle with the Persians at the Granicus River, a large part of Asia Minor went into the hands of the Macedonians.