BANGLADESH / Dhaka / 26.10.2009 /A 'madrasa', islamic school, in Old Dhaka. Islam is the largest religion of Bangladesh, the Muslim population is approximately 148.6 million, which is the fourth largest Muslim population in the world (after Indonesia, Pakistan and India), constituting 90.4% of the total population as of 2011. Religion has always been a strong part of identity, but this has varied at different times. © Fausto Giaccone / Anzenberger