Answer:
The Southern refusal to abandon notions of white supremacy following the Civil War
Step-by-step explanation:
Thomas Nast made a political cartoon in 1874 that he named, "The Union as It Was" showed a drawing of the KKK and a member of the White League having a handshake atop a skull and bones of a black woman. It also showed a man that was huddled over the corpse of a child as a school burns nearby.
This cartoon was made to criticize the white supremacist attitude of the South after the Civil War.
Therefore, the factors that played the greatest role in creating the conditions that Thomas Nast criticizes in the political cartoon The Union as It Was was the Southern refusal to abandon notions of white supremacy following the Civil War.