Who among the following Sultans succeeded in finally breaking and dest

Who among the following Sultans succeeded in finally breaking and destroying the power of Turkan-i-Chihalgani?

Iltutmish
Balban
Alauddin Khalji
Muhammad bin Tughluq
This question was previously asked in
UPSC CDS-1 – 2020
The correct answer is Balban. He systematically broke the power of the Turkan-i-Chihalgani to strengthen the central authority and his own position as Sultan.
The Turkan-i-Chihalgani, also known as the ‘Corps of Forty’, was a group of loyal Turkish nobles formed by Iltutmish to administer the Sultanate.
After Iltutmish, the Chihalgani nobles became very powerful and acted as ‘king-makers’. Balban, himself a member of the Chihalgani, understood their power and after becoming Sultan, he employed various measures, including executions and demotions, to dismantle their influence and assert the absolute authority of the Sultan.