In other countries like Colombia or Chile, television broadcasting has historically been public-broadcast dominated until the 1990s.
[citation needed] The largest commercial television groups are Mexico-based Televisa, Brazil-based Globo and Canada-based Canwest Latin American Group.
Due to the shared language of Spanish by two thirds of Latin Americans a lot of programmes and broadcasters operate throughout the region, offering both United States television (often dubbed into Spanish) and Spanish-language television.
Albavision broadcast in the ATSC format for about four years on channel 19 HDTV, but is now back to analog transmission on that same frequency.
(most are also available on DTT) National channels from Telefónica's Cable Mágico, the country's most popular operator.