Identify the part of the sentence that contains a grammatical error: The assumption that all data must be normalized (1)/ before processing it using machine learning algorithms (2)/ has been a common practice (3)/ in this domain for decades. (4)

Which movement aimed to promote Khadi, a hand-spun and handwoven cloth native to India?

Who were prominent leaders associated with the initial phase of the Telangana Rebellion (1946-1951) against the Nizam's rule and feudal landlords?

What was the immediate trigger for the Revolt of 1857?