Explanations:Jagat Seth was a prominent banker and financier in 18th century Bengal, known for his extensive financial dealings and influence. His family's rise to prominence was closely tied to the political and economic conditions of the region, particularly during the rule of Alivardi Khan, who was the Nawab of Bengal from 1740 to 1756.
Alivardi Khan's rule was marked by a period of relative stability and economic prosperity in Bengal. He was known for his administrative skills and his efforts to maintain peace and order in the region. This stability provided a conducive environment for trade and commerce, which in turn benefited the financial activities of the Jagat Seth family.
The Jagat Seths were involved in various financial transactions, including money lending, currency exchange, and trade. They also had significant influence over the Mughal administration and the Nawabs of Bengal. Their financial dealings were extensive and included transactions with the Mughal court, European trading companies, and local merchants.
During Alivardi Khan's rule, the Jagat Seths were able to expand their financial empire and consolidate their position as one of the most powerful banking families in Bengal. This period saw the peak of their prosperity, as they were able to leverage the stability and economic opportunities provided by Alivardi Khan's administration.
It is important to note that while other Nawabs of Bengal, such as Murshid Quli Khan, also played a role in the economic development of the region, the specific period of Jagat Seth's peak prosperity aligns with Alivardi Khan's rule. This is why Alivardi Khan is correctly identified as the ruler during whose time Jagat Seth became prosperous in Bengal.