Who brought two Ashoka Pillars to Delhi from Topra and Meerut?

The painted illustration of the moving of the meaning of the Ashoka Pillar at Topra is found in

Muhammad-Bin-Tughluq had transferred his capital from Delhi to –

The Delhi Sultan who wrote his memoirs, was :

Which Delhi Sultan is known for adopting the 'blood and iron' policy?

Who became the Sultan of Delhi after the death of Balban?