Population Control

We have now looked at the collapse of several civilizations and in some cases attributed it to population control/carrying capacity.  So if these civilizations collapsed at the hand on depleting environmental resources then what happens when China depletes the resources of several African nations?  Is it fair to these countries that their resources are being taken, regardless of compensation for these resources, possibly causing major environmental problems?  China will not be the civilization that suffers from resource depletion, it is the country that has the resources that will suffer.  I highly doubt these countries have a carrying capacity of the size of China.

So what role do other countries have in protecting other countries from resource depletion?  Is it right to sit back and watch a larger country pay off a smaller country to take their resources without regard of the environmental impacts?  Moreover, is it right to allow one nation to ruin it for the whole world?  I have a feeling that once the resources in Africa are gone China will find other places to extract resources from.  At some point we need to think about the world as a whole.