In which country is the city of Monterrey?

In which country is the city of Quebec City? In which country is the city of Winnipeg? In which country is the city of Halifax? In which country is the city of Guadalajara? In which country is the city of Cancún? In which country is the city of Tijuana? In which country is the city of Acapulco? In which country is the city of Oaxaca?