So you’re willing to whitewash the fact that in the overwhelmingly Protestant south - well after Wilberforce and the rest of the civilized world had turned away from slavery, that slavery persisted?
Really? You would have me believe that it was the fault of the Catholics? You’d better take a look at your history again.
Per usual, you exhibit knee-jerk selective reading in leaping to defend Rome. You might attack your own professional apologist who reproved the type of minimization by those who cannot allow themselves to see much of anything that impugns Rome, while i limited Protestant opposition to evangelical-types who did not want to uphold that tradition, and included a link to a summation which provides references and gives also credit to Rome for opposing it during the same era.
I also included informative links to the issue of slavery itself in the interest of balance, while it seems your only interest is to protect your image of your church.