Parts of the given sentence have been underlined. Identify the part that contains a grammatical error. Select 'No error' if there is no error. Although the team had trained diligently for months, they had still overwhelmed by the opponent's unexpected tactics.

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?