CORRECTION: I posted here that the partition of India left almost no Hindus in Pakistan or East Pakistan. Reihan Salam has pointed out to me (which I should have remembered) that this was not true of East Pakistan, now Bangladesh. Bengal was (even after its first religious partition and subsequent reintegration under British rule) exceptionally difficult to carve up into Hindu and Muslim districts; and the second Partititon of Bengal in 1947 did not succeed in doing so. Many Hindus migrated from East-Bengal-cum-East-Pakistan into Indian West Bengal, but not all did. I appreciate the reminder.