Should it become necessary any sovereign state can declare war on any other.
Canadian men crossed into the US and joined the US military to fight in Vietnam. Canada itself did not go to war.
Canada and the US were at war only during the War of 1812. The US was actually at war with the British Empire, but Canada was the closest part of that Empire. Since then Canada and the US have gotten along quite well.
The US invaded British North American, as Canada was known at the time.
No, the U.S. did not conquer Canada in the War of 1812.
The War of 1812 when the US attacked Canada!
The war of 1812.
Canada!! GO JETS GO
with war in toilets Canada hates toilets.
It was most certainly fair for the Canadians to go to war with the Brits because Canada was a possession (colony) of the United Kingdom. Here is a comparison for you so you can understand the concept better. If the US went to war and the State of Nebraska refused to go to war it would be unfair because the other 49 states had to go to war. So Canada could not refuse being part the United Kingdom. They did not have their own self rule as a nation yet. After World War 2 Canada and Australia were released from the United Kingdom.
Canada and Poland were allies from the start of The War in Europe to its very end.
So is a dog
Not sure why Canada would have fallen into a depression after the war when it was that very war that pulled the world (particularly the US) out of the depression. Canada's economy and the U.S. economy have always been tightly linked so when the U.S. was suffering under the depression in the 1930s, Canada's economy suffered as well. When the war pulled the U.S. out of the depression, its largest trading partner, Canada, flourished along with it.