Answer:
It's capitalism
Explanation:
Capitalism is the guiding economic philosophy of the free enterprise system.
If you're referring to the militarization and aggression of Germany, there's a lot of debate as to why these nations didn't intervene earlier. The general consensus is that nobody believed Germany would take it as far as they did.
There were several disadvantages of early forms of money like the limestone, cattle and shells. Firstly they were really tough to transport from one place to another because of the huge size. Secondly these kind of money were very rare and so it was highly difficult to find them.
In the north east maybe!?