The original question-specific evidence states: Alamgirpur is associated with the Hindon region. Hindon is the correct answer to “Which river or river-region is associated with Alamgirpur”. This evidence connects the required Ancient History fact with its archaeological, geographical, cultural or chronological setting. The choices Karachi region, Kutch region and Ghaggar-Saraswati region do not satisfy the same combination of site, feature, river region, crop, craft, discovery, chronology or cultural association. Replaying that method confirms Hindon as the keyed response for this Ancient History question.