Might seem an odd category to put it in but bare with me.
Money is what makes the modern human society tick over.
So when did Homo Sapiens introduce 'money' as a means of survival?
Just when did hunting/gathering of our ancestors become commercial?
Why and when did 'money' take over our natural instincts to eat, drink, flourish and survive?
As soon as people needed a method of recording an exchange of goods or work for future use and of being able to do that recording when interacting with strangers.