General Motors, Ford, and American Motors?

https://en.wikipedia.org/..._in_Canada

Why does it say on Wikipedia they're defunct Canadian car companies?
Isn't General Motors and Ford and American Motors United States founded and owned car companies?

It doesn't.

It says "Defunct Canadian Automakers & Brands:". Further it says "Acadian (General Motors)", "American Motors Canada", and "Meteor (Ford)". American Motors Canada is separate company than American Motors. Acadian and Meteor are Canadian brands.