In 326 BC, Alexander the Great invaded India, meeting an Indian ruler, Porus, in battle somewhere in the Punjab. What would be the results of a catastrophic loss for Alexander's troops at the Battle of the Hydaspes against the forces of Porus?
Would his fragile empire survive such a defeat, and the loss of invaluable veterans this entails?
Could this result in rebellion by some of the various satraps?
And if Alexander dies in this battle, what happens?