Because nongovernmental organizations provide relief after a natural disaster , who/what do they usually depend on?

I think they depend on stores because stores donate things to nongovernmental organizations. Also, surrounding states when a natural disaster occurs people from other states support these organizations. They depend on support and hope to get through whatever there going through.

would not cooperate with each other voluntarily.

one of the negative side effects were the economic losses the events of september 11th caused. many, many people lost their jobs as a result of a downturn in the economy after the terrorist attacks.