14वीं शताब्दी ईस्वी में विजयनगर साम्राज्य की स्थापना मूल रूप से निम्नलिखित में से किस राजवंश ने की थी?

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?