Explain the reason that Indians in the Americas, according to Guns, Germs, and Steel, are not able to fight back even though civil unrest appears worldwide against the descendants of invading conquerors.
The answer to this can be found in the Prologue to the book, specifically on p. 17 of the paperback edition. There, Diamond is discussing the importance of the fact that some societies have had power while others have been weaker. He notes that this fact has implications even today since there are many places where there is civil unrest or even guerrilla warfare carried out by indigenous people against their conquerors. Diamond notes that this is not, however, occurring in many places such as the Americas, Australia, Siberia, and Hawaii. The reason that Diamond gives for this is that these indigenous populations have come to be too small to effectively resist. In Diamond's words, these populations
became so reduced in numbers by genocide and disease that they are now greatly outnumbered ... (and) thus incapable of mounting a civil war...