Due to my personal preference of a nature both practical and aesthetic to look at the entities controlling the conspirators, I can’t help but notice the proposition that the papacy of that time period was responsible for the plot to kill Lincoln.
See “Rome’s Responsibility for the Assassination of Abraham Lincoln” by General Thomas M. Harris.
Also see this, by Charles Chiniquy who was close to Lincoln since prior to his presidency:
“After Lincoln became President, Chiniquy recounts how he and his former lawyer spoke of the potential dangers to the President by way of assassination. It was not merely a personal matter but one that embodied a grave threat to these United States and all its citizens. Why? By declaring their liberty to live free under a republican form of government, as outlined in its original Constitution, the citizens of this country were living contrary to the teachings of the Church of Rome. Therefore, the Church’s secret societies were (and are) taking steps to remedy this matter as directed by their leaders.”
https://hisworkmanship.net/a-warning-to-america-from-a-man-abraham-lincoln-defended-in-a-court-law/
The winners, with the enthusiastic assist of the New York Times, wrote the post-war history books.
The real truth about the War of Northern Aggression, and its aftermath, is only known in the heavenly kingdom.