God gives different nations, different lands, different languages and different skin colors. Different religions, when God comes again, will test whether human beings can Comply with the Covenant with God.
Islam, Christianity, Buddhism and Taoism are all Covenant between God and different nationalities.
After thousands of years of these conventions, many doctrines can't adapt to the era of modern civilization, Internet and robots.
This is the main reason that caused the whole world to fall into chaos. Because religion has lost its power..
God and mankind need a new Covenant.