The six-page section, titled The Ghaznavid Invasions, states that Mahmud of Ghazni conducted 17 campaigns in India, returning each time with large quantities of treasure. The old NCERT class 7 history textbook had a paragraph on Mahmud of Ghazni.
'It looked as if India had been a major player in science at that time, raising the question when and why things changed,' says distinguished aerospace scientist Professor Roddam Narasimha.
'Communalism and communal riots happened in India only during and due to colonialism. Pre-colonial India didn't have this problem of communal conflicts and religious strife.'