I can guarantee you that people killed and fought each other long before the invention of money. There is no single origin of all problems. If anything it would be the scarcity of resources and the greed or need of humans.

It's because of their heart and thought. it is simple when the people obey their religion truthfully! the money is not exactly the origin of problems i think. is it right?

The issue is that, unfortunately, it's a dog eat dog world out there and every living thing just does what it needs to to survive. Not just humans, but all animals as well. I guarantee there were many primitive tribes that would kill each other and steal what they had in order to increase their own chances of survival. The difference is, we now use money to facilitate this, rather than a barter system. Money isn't the problem. The problem would still exist. People with money are never happier anyway. They are merely less scared because they have financial security. I'll also put it bluntly; money is NOT always the ideal solution. My father died from cancer and I was left some money from his estate. I can tell you right now, that I'd much prefer to have my father still alive than to get a few extra bucks. Money isn't an ideal solution here. I can't simply pay to bring him back to life, and that's the cold hard truth.

Thank you all for your answer :)

yes !!! My opinion is yes