It's believed to be the fanily cause the role of the family is to ensure responsible citizens, preserve society, and balance the desires of individual liberty with the demands of community responsibility
It could be argued that it is "the media" that is the most important social institution in American life, since having a free press is one of the most important elements of a democracy.
I would go with africa. The consensus on that is much wider however some recent study's have raised suspicion that they may have come from the middle east.<span />