Technological advancements, such as the beginning of the space race and things of that sort.
Hinduism was the dominant religion in India
Quakers believed that slavery was wrong and many hid escaped slaves into the underground railroad
The person to change this was Sir William Blackstone, an English jurist, judge, and politician of the 18th century. Blackstone's most famous works were the 1766 Commentaries on the Laws of England, which summarized English common law in a way that was accessible, logical, and understandable.