system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:How does an economy crash.

One has been posted five years ago so its pretty old, and I would like a more simplified explanation.
gpt
A crash can ultimately be caused by many different things, but they all have the same effect: money stops circulating.  

To over simplify a healthy economy; a baker sells bread, he uses that money to buy flour from a farmer, the farmer uses that money to buy equipment from a factory, the factory uses that money to pay workers, the workers use that money to buy bread.  But if the economy crashes, the factory closes down and so can't pay it's workers.  Then the workers can't afford to buy bread.  Because no one is buying bread, the baker can't afford to buy flour.  The farmer can't afford to buy equipment.  No has money to spend because no one else is spending money.  It's a vicious circle.