mankind is
This answer is basically correct, but there is no single answer.
Overpopulation seems to be the best answer. Less people means more territory and Natural Resources for all. Most wars are fought over territory and natural resources. Pollution would not be a problem.
That only leaves Greed.
Chat with our AI personalities
State governments
It was them or the USA and the USA was by far the greatest threat to Canada and other British colonies in North America.
The greatest man to ever grace this earth. He is possibly a god amongst mortals!
Samuel Adams
your mother