Explanations:The Khilji dynasty was a significant ruling dynasty in medieval India, known for its Turko-Afghan origins and its rule over parts of the Indian subcontinent from 1290 to 1320 CE. The dynasty was founded by Jalal ud din Khilji, who was the first ruler of the dynasty and ruled from 1290 to 1296 CE. He was succeeded by his son-in-law, Alauddin Khilji, who became the second ruler of the Khilji dynasty and ruled from 1296 to 1316 CE.
The relationship between Jalal ud din Khilji and Alauddin Khilji is a crucial aspect of the dynasty's history. Alauddin Khilji married the daughter of Jalal ud din Khilji, which made him his son-in-law. This marriage was a strategic alliance that helped consolidate power and ensure a smooth transition of rule within the dynasty. Alauddin Khilji's reign was marked by significant military conquests and the expansion of the Khilji empire.
Understanding the familial and political relationships within the Khilji dynasty is essential for comprehending the historical context of medieval India. The transfer of power from Jalal ud din Khilji to Alauddin Khilji through marriage highlights the importance of familial ties and strategic alliances in the political landscape of the time. This relationship also underscores the complex dynamics of power and succession in medieval Indian history.
It is important to note that the other options provided in the question do not fit the historical context. Firoz Khilji, Balban, and Kaikubad were not related to Jalal ud din Khilji in the manner described. Firoz Khilji was a different ruler and not his son-in-law. Balban was the last ruler of the Mamluk dynasty, which preceded the Khilji dynasty. Kaikubad was a ruler of the Delhi Sultanate but was not related to Jalal ud din Khilji as his son-in-law.
Thus, the correct answer is that Alauddin Khilji became the son-in-law of Jalal ud din Khilji, which is a significant historical fact in the study of the Khilji dynasty and medieval Indian history.