किस गहड़वाल राजा ने लाहौर से गजनवी कमांडर (जिन्हें अक्सर अमीर खुसरो के रूप में उल्लेखित किया गया है) को खदेड़ दिया या उनके विस्तार को रोका था?

Who built the Shahi (Royal) road during his rule, which was later renovated and renamed the Grand Trunk Road by the British?

In which year was the Bahmani Sultanate established?

The 'Alai Darwaza', the entrance gate of Qutub Minar, was constructed during whose reign?