The six most major religion are generally considered to be Hinduism, Judaism, Buddhism, Christianity, Islam, and Sikhism. this is because they have the largest numbers of followers and are practiced in many parts of the world, not just in the areas where they originated.
Those religions are dealt with in some detail,in date order.
Geography and religion
Some of the differences which exist in religion are partly to do with where people happen to live.
What exactly is religion and why is it a part of so many people's lives?
Throughout history and across the world there have been people who believe that something exists beyond the physical world that they experience through their sense.
Even when you are thinking or feeling emotions, you are using your brain, which is part of the physical of world.