The Diverse Continent From the Himalayas in the north to Cape Comorin In the south. India presents an immense diversity of peoples, geography and languages. Do the strengths derived from this diversity outweigh the strains it imposes on the Indian Union? In the first of five documentaries. John Keay reflects on what holds the subcontinent together. Contributors Include PUPUL JAYAKAR , SITA NARASIMHAN, MRINAL DATTA CHAUDHURI , ALI SARDAR JAFRI Producer DAVID PERRY