The battle Bucephalus died after took place in what modern province of Pakistan?
Alexandria Bucephalous:  Bucephalus had died after the Battle of the Hydaspes in 326 BC. Battle of the Hydaspes: The Battle of the Hydaspes was fought in 326 BC between Alexander the Great and King Porus of the Paurava kingdom on the banks of the river Jhelum (known to the Greeks as Hydaspes) in what is now the Punjab province of Pakistan.
Punjab