Bombay, Karachi, linked by sea and refuge

The 70th Independence Day for India and Pakistan – August 15 and 14 respectively – is a reminder of how Partition displaced 15 million people, causing untold hardship. What is less known is that the cities of Karachi and Bombay have had a shared colonial history and economy: the parting of ways left one bereft of a host of spirited citizens, who went on to rebuild their lives in the other