I hope you are as consistent in discussing slavery in the west. It was indeed a basic institution throughout the ancient world, no ancient religion set out to abolish it, just to regulate it.

But there is a reason it first became morally unacceptable in the west, and not  elsewhere. That was the result of the long historical development of social thought which, working from elements of Greek, Roman, Christian and Enlightenment thought, came up with the notion of basic human rights. It was Christian groups who first started fighting against slavery.

Groups fighting for the rights of OTHERS, based on a moral code, was rather revolutionary. Every society has rebellions, i.e. people fighting against their own oppression, but having organized social reformers fighting for the freedom of OTHERS based on a moral code was a western phenomenon.