Who were the temperance reformers? why do you think they became active in the 1820s and 1830s?

The temperance reformers were part of the temperance movement that was a social movement against the consumption of alcoholic beverages that began in around the 1820s. The preacher Lyman Beecher and the minister and professor of theology John Edgar were one of the temperance reformers.
They became active in the 1820s and 1830s because in that period, after the American revolution when many economic and social problems occurred as a result of rapid inflation, the widespread drinking became a way of life.