Moral progress is a trend or change for the better in the morality of members of a society. For example, when the United States went from widespread acceptance of slavery to widespread rejection of slavery, that was moral progress on most views of morality.

Economic progress is a trend or change that results in increased wealth for a society.

In general, widespread acceptance of a moral principle, like our views on slavery, animal rights, vegetable rights, and universal minimum income, only comes after we can afford it.