American public opinion about cuba is most shaped by the media, even more than what the government says, yellow press has always tried to influence people opinion, back in the 70´s there were not way to really know what was going on, so people had no choice but to believe the news they showed, that was how years went by and public opinion about Cuba got stronger, today, the media still has a big impact on people but there are more sources, more technology and ways to find out what we want to know.
Native American tribes are grouped by the language they speak. For example, the Apaches are a group of several tribes that all speak the same language.