That's not true. In UK for example anti slavery movements are born during the civil war as well. But chattel slavery was already abolished for a period in the

That's not true. In UK for example anti slavery movements are born during the civil war as well. But chattel slavery was already abolished for a period in the 12th century, before the Norman occupation that reinstated it. US abolished it after a civil war because every other country already did it without having to kill each other, but civil war was really about money and taxation. It didn't start to abolish slavery.