As america entered the nineteenth century, some protestant denominations preached that america should turn away from the "national sins" of slavery and alcohol, while other denominations encouraged individuals to confess their personal sins in public. identify the denominations that emphasize either national sins or public confession.

In America, we have very many different denominations. For example, we have the Catholics and the protestant but they were termed as the ones who occupy a large number in America.
Some of the Protestant denomination who emphasized on national sin were Presbyterian and Congregationalist.
That protestant denomination preached emphasizing on personal public confession were Baptist and  Methodists.