Why science is wide spread wheareas for a religion to spread it took hundred of years and science did it in just over 200 years that too worldwide
Principles are same everywhere whether you are on south pole or in a remote village in africa, all the defined laws of physics acts same, every experiment conducted yields the same result when you perfom it in identical situations
People could verify themselves For religion, you must give confidence to a person that by believing in you religion, will set them free and will give them moksha and similar kind of things. But for science even a skeptic person is able to recreate something and verify the true nature of it.