The verified answer to “Important Battles question: The Battle of Bhopal (1737) established Maratha dominance over which region?” is North India (near Delhi), option B. The source-backed, question-specific record explains: The Battle of Bhopal (1737) was fought between the Maratha forces under Peshwa Baji Rao I and the Mughal-Nizam alliance. The Marathas won and Baji Rao I was able to march up to Delhi establishing Maratha supremacy in North India. This evidence establishes the historical relationship required in this Important Battles item. A correct solution must preserve the exact battle, date, participants, commander, location, outcome or significance requested by the stem. Similar periods, genres or national traditions do not make two battle facts interchangeable. Option B gives North India (near Delhi) and satisfies every condition stated in the question. The remaining choices—Punjab, Bengal and Deccan—do not satisfy the complete requirement. The reliable checking method is to identify the named battle first, recall or verify its verified participant or outcome, and then read qualifiers such as “both works,” “original language,” “first published,” “correctly matched” or “incorrectly matched.” These qualifiers determine what counts as the answer. Replaying that method for this Important Battles question confirms North India (near Delhi) without relying on option position.