USA
They fear there economy is too dependent on the United States
russia
Fear of American expansion
The fear was that Communists would dominate the world, or at least most of Asia, Africa and parts of South American and Europe. Communists were thought to be a united international movement.
Most countries have created cultural conflicts for Canada, via immigration. We have tried to keep these conflicts to a minimum in large part by not forcing our own culture on to new Canadians. Seems to have worked well so far.
The guy with the revolver that fires out of fear
Canadians have always had a wide range of different attitudes in different times and regions. The main resistance to immigration has generally come from Quebec, where French-speaking Canadians feared that immigrants would dilute the Francophone culture. But there are strongly pro- and anti- immigrant feelings in all of the provinces.
For fear of death.
Hgg
Partly is was national prestige, but mainly it was the fear that the nation who controlled space would dominate the rest of the world militarily.
save country
Xenophobia No, it is not xenophobia. I don't know the answer, but I do know that xenophobia is the fear of people from another country.