Money is a marker or chit for goods or services rendered.
Before fractional lending growing economies ( like the US in it's early days ) would forever run out of currency in circulation as the supply of gold and silver coin would not grow as fast as the economy.
So script ( paper money ) started to replace gold ( the gold standard ) but governments tried to keep a 1:1 ratio between the gold reserves ( Fort Knox ) and the script ( bank notes ) issued.
This didn't work either - sometimes because of rapid growth and sometimes rapacious governments needing to fund wars with money they did not have.
This is a long but very interesting history from PBS
and part two
Here's a written history
http://www.xat.org/xat/moneyhistory.html
How's this for prescience 200 years back...
Nicholas Biddle 1836 By calling in existing loans and refusing to issue new loans he did cause a massive depression, but in 1836 when the charter ran out, the Second Bank ceased to function. It was then he made these two famous statements: "The Bank is trying to kill me - but I will kill it!" and later
"If the American people only understood the rank injustice of our money and banking system - there would be a revolution before morning..."
It's been an ongoing battle between banks greed
http://www.thestar.com/news/world/artic ... ction?bn=1n 2010, Dublin lawyer Vincent Martin and his colleagues were contacted by a man who was at loggerheads with the Irish Nationwide building society, a local bank. After obtaining the bank’s files on his account, the man had discovered the bank, which has since merged with Anglo Irish Bank, had created a new version of him for their credit committee.
So they could lend him more money during Ireland’s bull market, banking officials had changed the man’s occupation, inflated his roughly $39,000 annual salary to $78,000, and forged both his and his employer’s signature. Martin wouldn’t reveal the man’s name because of ongoing litigation. He also declined to say whether police were involved in the case.
governments need to fund wars - often not of their own choosing
and of course our own "money from nothing" attitude which led hundreds of thousands to use their houses as ATM machines and expect the prices to ever grow up - urged and cajoled by the reality industry and the bankers issuing the debt.NAPOLEON (1803 - 1825)
He didn't trust the bank saying:
"When a government is dependent upon bankers for money, they and not the leaders of the government control the situation, since the hand that gives is above the hand that takes... Money has no motherland; financiers are without patriotism and without decency; their sole object is gain."
Napoleon Bonaparte, 1815
For both sides of a war to be loaned money from the same privately owned Central Bank is not unusual. Nothing generates debt like war. A Nation will borrow any amount to win.
Back to your question....
when a bank issues a loan it is effectively putting new money into circulation - if the value of the loan is honest - it's not a bad system keeps money supply matched with growth.
But put in creative accounting, dishonest valuators and seriously stupid bidding wars on houses that still goes on and the bubble of magical money was overwhelming the traditional economies all over the world ( see the two Economists articles about the biggest bubble early on ).
The piper has to be paid .....now the pain will go on for a very long time and the battle to bring the banking community into the real world instead of their fantasy land of eternal obscene bonuses goes on.
Each default pulls the money supply down ( correction ) and by moving the value of the properties into line with incomes tho that is far from the case in Canada and Australia notably where there are slow bubbles in play tho it looks as if Vancouver's is popping now as is Sydney's.
If you are confused about money you are hardly alone and the idea that banks can effectively create 10 to 20 times their capital in loans out of thin air and it being sanctioned by the government seems utterly outrageous.
It is.
With that chartered right should come responsibility both to avoid speculative activies and to provide financing across the entire valid needs of the real economy.
The local season business who needs a few months loan until the season is over ( crops notably ), the local business that needs to buy new machinery etc.
These all need low cost loans yet they don't get it - they get tossed off into the credit card scam machine which is another bit of history that will appall - this one you can trust.
If you watch the four videos you just might get on the barricades.