I have recently started reading a book by John Cahn called The Mystery of the Shemitah. You can think of a Shemitah as a nations covenant with God. This references how Ancient Israel fell and why, it also discussed this as parallel to the United States. In 722 B.C. the Assyrians destroyed the northern kingdom of Israel, then in 516 B.C. the Babylonians destroyed the first temple in Jerusalem in which they conquered.
Israel was a God-Centered nation, and was replaced by a man-centered and self centered view. The people drove God out of every aspect of their lives. They then rewrote the laws and morals, they took it upon themselves to determine right from wrong. Without God nothing can ever be holy, and nothing has a purpose except for its man made purpose in this case. When you cut off God from a nation, the land and the people become broken off from their Creator. This will lead to all their blessings being removed from them, as you see take place in Israels fall.
In America we have driven God out, in so many ways it is even sick to think about. These same aspects apply to us. I will later be posting more specifically as to how dates in American history, very recent ones, match up with Ancient Israel dates that led to their fall. These dates in American history are occurring in the same order and time in between them as Ancient Israel, which is scary to think about.
If you are a Christian, I number one encourage you to pray for our nation, as it is desperately needed. Second I encourage you to look into the books published by John Cahn to learn in more detail for yourself. He is a New York Times Best Selling Author, and I highly recommend his content. Please subscribe to my blog for continued postings on this topic!