Alexander defeats Persians and reaches India and fights the Battle of Hydaspes/Jhelum in 326 BC. He leads a campaign along India's western lands along the Indus river and the regions to its west in modern day Balochistan. This weakened western India provides the right environment for Chanakya and Chandragupta to raise armies, capture lands and taste power. They would then train their arrows on the Nandas in the next episode and create the Mauryan Empire.