Countries: Equatorial Guinea (GQ), Spain (ES), Chile (CL), Panama (PA), Uruguay (UY), Argentina (AR), Mexico (MX), Costa Rica (CR), Dominican Republic (DO), Venezuela (VE), Colombia (CO), Peru (PE), Cuba (CU), Ecuador (EC), Paraguay (PY), El Salvador (SV), Guatemala (GT), Honduras (HN), Nicaragua (NI), Western Sahara (EH), Niger (NE)
Wikipedia: http://en.wikipedia.org/wiki/Spanish_language