Centralized Banking
Central Banks create the money for an entire nation. They then loan this money to the government 'at interest!'. This is where the national debt comes from. It is not IOUs for borrowing real assets or real money, it is interest on worthless paper printed by the fraudulent Central Bank with nothing backing it. This system does not have to exist and subsists by forcing you to pay Federal Income Tax.
There have been several Central Banks in the history of the continent, but I will only focus on the three that have existed since the United States became a country. The First Bank of the US in Phiadelphia started the onslaught of the Central Bankers on our country. Their charter was voted down at the next renewal cycle citing gross abuses of economic conditions. The Second Bank of the United States opened its doors in Philadelphia as well. Nicholas Biddle lorded over this Central Bank as the chairman. President Andrew Jackson recognized the money manipulations of the First Bank of the US and became intent upon killing the Second Bank of the United States. After a heated battle in Congress and the eventual Sensure of President Jackson, he succeeded in routing out the 'den of vipers' as he called them. He destroyed the bank and completely paid of the national debt. Jackson remains the one and only president to do so.