Explanation: The invasion of the Indian subcontinent by Alexander the Great in 326 BCE is a significant event in ancient Indian history. Alexander, after conquering the Persian Empire, continued his campaign eastward, reaching the Indus Valley. His primary objective was to expand his empire and establish control over the rich and fertile regions of the Indian subcontinent.
During his campaign, Alexander encountered several Indian rulers, but the most notable encounter was with Poros, also known as Puru. Poros was the ruler of the Paurava kingdom, which encompassed parts of the Punjab region. The Battle of the Hydaspes River, fought between Alexander and Poros, is one of the most famous battles of Alexander's conquests. Despite being outnumbered, Alexander managed to defeat Poros, but he was so impressed by Poros's bravery and leadership that he allowed him to retain his kingdom as a vassal state.
The other options provided in the question are incorrect for the following reasons:
- Bessus was a Persian satrap who rebelled against Darius III and was not associated with the Punjab region during Alexander's invasion.
- Ariobarzanes was a Persian satrap and not a ruler of the Punjab region.
- Craterus was a Macedonian general who served under Alexander the Great but was not a ruler of the Punjab region.
Understanding the historical context of Alexander's invasion and the rulers he encountered is crucial for comprehending the political landscape of the Indian subcontinent during this period. Poros's kingdom was strategically important, and his encounter with Alexander marked a significant moment in the history of the region. This event also highlights the complex interactions between the Hellenistic world and the Indian subcontinent, which had lasting cultural and political impacts.