Around 338 BC, Greece was merged by Macedonia, the predecessor of the later Alexander Empire. After conquering Greece, Alexander invaded the Daniil Strait, marched into today's Turkey, which is the territory of the Persian Empire, conquered the two river basins, conquered Egypt, invaded India and so on. Established the first great empire in the history of the world spanning three continents: Asia, Europe and Africa. In the process of conquest, Alexander brought Greek civilization to the East (from the point of view of westerners, Turkey belongs to the Near East, but now, so Greek civilization was influenced by Eastern civilization at this time.