He was asked to do so by U.S. and he has to do it to make U.S. happy. Canada is son and U.S. is Dad, isn't it? Otherwise who is going to protect the poor Canadian.
The French were defeated by the British, way before Canada became a country.
Now even Quebecers do NOT want to separate, as they realized it's a economic suicide.
You got to learn some history!
乌克兰危机:加拿大为什么这么起劲