This question asks to identify the Indian state ruled by Siraj-ud-Daula, Mir Jafar, and Mir Qasim during the $18^{th}$ century. These individuals were key figures in the political history of eastern India during that period.
Siraj-ud-Daula, Mir Jafar, and Mir Qasim were successive rulers, known as Nawabs, of the historical region of Bengal. Their reigns occurred during the mid-to-late $18^{th}$ century, a time of significant political transition in India.
The administrative and political activities of these three Nawabs were centered in the province of Bengal.
The $18^{th}$ century was a critical phase in Indian history. The weakening Mughal Empire led to the rise of regional powers. Simultaneously, European trading companies, particularly the British East India Company, expanded their political influence. Bengal, being a wealthy province, became a central stage for these developments, heavily involving rulers like Siraj-ud-Daula, Mir Jafar, and Mir Qasim.
The question specifically relates to the territories governed by these Nawabs. Let's consider why the other options are incorrect:
Based on historical records, Siraj-ud-Daula, Mir Jafar, and Mir Qasim were rulers associated exclusively with Bengal during the $18^{th}$ century.
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