Classify the countries based on the continent they belong to - North America or South America with the former as 'north' and the latter as 'south'. United States, Mexico, Canada, Brazil, Columbia, Argentina, Cuba, Jamaica, Chile, Guyana, Peru. 
 'north', 'north', 'north', 'south', 'south', 'south', 'north', 'north', 'south', 'south', 'south'.