Alexander the great was the prince of Macedonia, he became king of Macedonia when he was 20 years old with the killing of his father Philip II.
This is the reason the number one alternative best describes the conquest of Alexander, he led <em>Macedonia to unite all the city-states of Greece</em> under his power. There were many rebellious cities like Thrace and Athens, but Alexander destroyed the most rebellious one (Thebes) and this made Athens submit to his power.
After this, <em>he launched a campaign against the Persian Empire</em> just as his father envisioned before his death. At the start, Persians decided to ignore his movement.
After he conquested Persia’s naval bases along the coastline of Asia Minor and Palestine, <em>he marched into Egypt</em>. There he didn’t have any battle, because of his reputation the Egyptian governor Mazaces handed over the government, because of that he was kept part of the new administration with Cleomenes.
