Who founded the Tughluq dynasty of the Delhi Sultanate in 1320?

Who was the last ruler of the Tughluq dynasty of the Delhi Sultanate?

Who founded the Mamluk (Slave) Dynasty, the first ruling dynasty of the Delhi Sultanate?

Which dynasty of Delhi Sultanate ruled for the shortest period?

Which dynasty of Delhi Sultanate ruled for the shortest period?

Who created the department of Diwan-i-Arz in Delhi Sultanate?