Ikhtiyar Uddin Muhammad Bakhtiar Khilji was my Childhood hero, he was a turk..... He came like a storm riding a horse through the forest of Jharkhand, only 17 of his soldiers managed to follow him..... When he entered Nadiya with 17 horsemen no one noticed...... He went to the palace, killed guards and Laxman shen managed to escape by a boat from behind.... Wow! What a general!
Please get rid of this 17 horsemen childhood story and read accounts from contemporary history books like Taj-Ul-Nasiri written by Minhajuddin Siraj. Also, you may read 'History of Bengal' composed by Charles Stewart. There are tens of other authentic books to know the facts.
Bakhtiar was accompanied by about 12,000 Turkic horsemen in the Nadia invasion, who he hided in the deep jungle near that City asking them to rush when he sends signal. He came to that City with 17 of his men disguising themselves as traders. But, theere was sudden hassle with the guardsmen, and the Raja panicked and fled with a racing boat. Note also that Nadia was not a garrison City andf it was not that much protected because it was not the Capital of Bengal.
Nadia was not the Administrative Capital of Bengal. It was a City of temples and the Raja kept himself busy in religious activities there while his eldest son Biswarup Sen was administering the country from Lakkhanabati, the Capital of Bengal. Lakkhanabati is the word that was mis-spelled by the non-Bangali Turks to Lukhnauti.
So, it is not true that Bengal was conquered by only 17 men or Bakhtiar brought only 17 men from a 1500 km away Afghanistan and suddenly invaded Bengal. Bakhtiar brought more than 30,000 troops or family heads who domiciled in Bengal and whose descendents dominated the politics here for a few centuries. The initial number of Turkic settlers may have been more than 200,000 men and women. They were the first batch of Muslims in Bengal.
Note that Bakhtiar lost about 10,000 Turkic horsemen in Assam in a future expedition to Tibet. However, there were many tens of thousands of his people in Bengal who were ready to thwart any scheme by the Sen Rajas. Turk settlers dominated the politics of Bengal until about the middle of 14th Century. However, their influence continued for many more years.