The verified answer to “Important Battles question: Which battle saw the Mughal Empire's greatest defeat against the Marathas in the 18th century near Delhi?” is Battle of Delhi 1737, option B. The source-backed, question-specific record explains: The Battle of Delhi (1737) saw Maratha commander Baji Rao I lead forces to the very gates of Delhi defeating the Mughal forces. This was one of the most humiliating defeats for the Mughal Empire and demonstrated the Marathas' pan-Indian reach. 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 Battle of Delhi 1737 and satisfies every condition stated in the question. The remaining choices—Battle of Bhopal, Battle of Panipat 1761 and Battle of Karnal 1739—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 Battle of Delhi 1737 without relying on option position.
