1 Read the source below carefully to answer question (a). After Independence, Urdu became the national language as it was a unifying force in the new country. It was seen as the link language for all the provinces to provide for the cultural and educational needs of the people. However, it was also recognised that regional languages had an important role to play in the newly formed country. One of these was Sindhi. (a) How has Pakistan promoted the development of Sindhi since 1947?  (b) How did the successors of Aurangzeb contribute to the downfall of the Mughal Empire?  (c) Was the Industrial Revolution in Britain the most important reason why the British were able to take control of India between 1750 and 1850? Explain your answer.