जीन पियाजे के अनुसार, संज्ञानात्मक विकास निम्नलिखित में से किस अवस्था से शुरू होता है?

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?