It was groundbreaking because it was funny and educational and approached modern topics in a way that was accessible to children, yet it wasn't offending anyone. It was one of the first show whose educational effects on children were studied and it is considered to be a very positive show and a good thing to watch. The long term impact is that it created a legacy of a hundred million people watching the show in their lifetime, usually when children.
The developed a division of labor so that people could help to do there own jobs and not interfering with others.
The statement can be taken either way because it is still a topic in which a definite conclusion hasn't been made. It is suggested that the coach of the losing team or whole of the losing team were sacrificed to the Aztec Gods, but this is disputed by lots of historians because in the Aztec society it was an honor to be sacrificed, so it might have been that the winning coach or the whole team were sacrificed instead. Considering the importance of the game on a political and religious levels, it is hard to tell which way did the sacrifices were taking place, and even if they occurred at all.