(b) 3, 1, 2, 4
Tughlaqabad Fort is a ruined fort in Delhi, stretching across 6.5 km, built by Ghiyas-ud-din Tughlaq, the founder of Tughlaq dynasty, of the Delhi Sultanate of India in 1321, which was later abandoned in 1327. Fatehpur Sikri is a city and a municipal board in Agra district in the state of Uttar Pradesh, India. It was constructed by Mughal Emperor Akbar beginning in 1570, in honour of Sufi saint Shaikh Salim Chisti. Qutab Minar - 1206 -1236; Lodi Garden - 1451-1526.