Are Christendom's Churches Part of Babylon the Great?

"Yes, in her [Babylon the Great, the worldwide empire of false religion] was found the blood . . . of all those who have been slaughtered on the earth."--Revelation 18:24

So, much of all that blood ever spilled on the earth we must also find spilled at the feet of the clergy and laity of Christendom's Churches in the USA, and that, in no small part, because those persons concocted a fratricidal civil war. Indeed, where else should we find in the USA that part of a bloodthirsty Babylon the Great (which, per the logic of the scriture at Revelation 18:24, logically had also to be murderously present in the USA during the blood-spilling Civil War era) if we could not truthfully say that the Churches instigating and participating that murderous Civil War in the USA already were -- and have ever continued to be -- a large part of that murdering, God-condemned Babylon the Great?