Correct Answer - Option 4 : Firoz Tughlaq
Jaunpur, historically known as Sultan, has its historical dates from 1359 when the city was founded by the Sultan of Delhi Feroz Shah Tughlaq and named in memory of his cousin, Muhammad bin Tughluq, the whose given name was Jauna Khan.
- In 1388, Feroz Shah Tughlaq appointed Malik Sarwar, a eunuch, who is notorious for having been the lover of Feroz Shah Tughlaq's daughter, as the governor of the region.
- The Sultanate was in disarray because of factional fighting for power, and in 1393 Malik Sarwar declared independence.
- He and his adopted son Mubarak Shah founded what came to be known as the Sharqi dynasty (dynasty of the East).
- During the Sharqi period the Jaunpur Sultanate was a strong military power in Northern India, and on several occasions threatened the Delhi Sultanate.
- The Jaunpur Sultanate attained its greatest height under the younger brother of Mubarak Shah, who ruled as Shams-ud-din Ibrahim Shah (ruled 1402–1440).
- To the east, his kingdom extended to Bihar, and to the west, to Kanauj; he even marched on Delhi at one point.
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Under the aegis of a Muslim holy man named Qutb al-Alam, he threatened the Sultanate of Bengal under Raja Ganesha.
