Answer:
True.
Step-by-step explanation:
Alexander the Great's campaign in India started in present-day Pakistan after his Persian campaign. After advancing to Punjab, Alexander encountered a local king called Porus and battled him in a battle that was very costly for the conqueror (Battle of the Hydaspes River). Alexander won the battle, and let Porus rule on his behalf. Alexander and his men continued to the east, conquering some territories until reaching the Hyphasis river, which is a river in northern India. In there, Alexander's men revolted and he was forced to go back to Macedonia.