大象传媒

Religion has been the fuel behind some of the world's biggest companies, and contributes trillions of dollars to the US economy. After the death of American spiritual evangelist Billy Graham, we ask how the tie-up between faith and business has been so profitable - more so than some of the world's biggest energy companies.

(Image: Close-up on dollar bill of the phrase 'In God We Trust'. Credit: zlisjak / Getty Images)