One reason that more people didn’t foresee the economic collapse of the 1930s is that it came about so suddenly, with practically no warning, since the US economy throughout the 20s was thriving and "booming"--leading people to think that there were no issues whatsoever.
“Redskin” is a slang term for Native Americans.
C. Surrender before battle
I am not quite sure, but my best guess is GUTENBURG Have a great day.