Challenging the establishment of privately controlled central banks is the leading cause of assassinated presidents.
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Lincoln printed 400 million dollars worth of Greenbacks (the exact amount being $449,338,902), money that he delegated to be created, a debt-free and interest-free money to finance the War. It served as legal tender for all debts, public and private. He printed it, paid it to the soldiers, to the U.S. Civil Service empoyees, and bought supplies for war.

Shortly after that happened, "The London Times" printed the following:

"if that mischievous financial policy, which had its origin in the North American Republic, should become indurated down to a fixture, then that Government will furnish its own money without cost. It will pay off debts and be without a debt. It will have all the money necessary to carry on its commerce. It will become prosperous beyond precedent in th history of the civilized governments of the world. The brains and the wealth of all countries will go to North America. That government must be destroyed, or it will destroy every monarchy on the globe."