Candide is a satire by the philosopher Voltaire. It is very critical of the aristocracy and the church, It is also critical of certain tenets of the Enlightenment, especially ideas about social class. The novel uses humor to show the need for social reform.
The answer should be:
Animal & human power were generally replaced with steam power.
According to Albert Barnes, their mistake was that they didn't speak against slavery. Although many of them believed that slavery was against god and against the idea that god made everyone equal, they didn't do much against it out of many reasons, either they thought it was a necessary evil or they were afraid of the public reaction.
