Out of the four countries, Canada is the only one which has strict gun control and it has the lowest murder rate of the four.
What do you mean by "strict gun control?" We have a system of registering guns for law-abiding citizens who wish to use them for recreational purposes such as target shooting and hunting. I'm not sure how that reduces crimes committed with guns.
According to the news clips I've seen where police departments show the caches of illegal and unregistered weapons seized from gangs and other other criminals, we don't seem to have effective "strict gun control."
That term is a Liberal-inspired fantasy designed to make people think they're all safe and protected. And we all know that a fantasy is the opposite of a reality. And in the case of gun registration, it's a cumbersome, ineffective, expensive, and intrusive fantasy.
The really sad part is that when crimes are committed with illegal guns, liberal judges are the first ones to hand out soft sentences, thus driving the entire issue down to a new level of silliness.