Alexander crossed the Indus and Jhelum River when defeating Porus and appointing him as a satrap following the Battle of the Hydaspes .
Alexander would then venture into Punjab ( land of five rivers ) , which was conquered by Darius the Great before him .
Alexander crossed the Indus and Jhelum River when defeating Porus and appointing Alexander as a satrap following the Battle of the Hydaspes .
Alexander would then venture into Punjab ( land of five rivers ) , which was conquered by Darius the Great before him .