The statement that best identifies similar ideas regarding slavery and the country's problems in both passages is:
Both passages place clear blame on supporters of slavery for the country’s problems.
In Douglass's speech, he exposes the hypocrisy of a nation celebrating freedom while simultaneously upholding slavery, indicating clear blame towards those who support such an institution. Lincoln, while adopting a more neutral tone, still acknowledges that both sides invoke divine support for their opposing causes, which implicitly points out the moral failings of those who perpetuate and support slavery. Thus, both authors attribute significant moral responsibility to supporters of slavery for the issues facing the nation.