Outcome:
1. Darius III’s defeat led to the collapse of the Achaemenid Empire by Alexander III of Macedon (Alexander the Great).
2. It marked the beginning of the Hellenistic era, characterized by the spread of Greek culture and influence in the Middle East and beyond.
3. Alexander’s conquest brought an end to nearly 200 years of Persian rule over much of the region.
4. The Macedonians established a series of new cities and settlements, including Alexandria in Egypt, named after Alexander himself.
5. The battle left a lasting impact on military tactics and strategies, with Alexander’s innovative use of cavalry and combined arms warfare becoming a model for future military leaders.