They had similar trading methods and some of the same trading goods
The Spanish conquistadors believed them to be infidels. They would read them a note from the Pope in Spanish that they wouldn't understand in which they would proclaim that their land would now be Spanish because Spain is governed by one true God, and after that they would slaughter them if they wouldn't surrender.
So eastern German's could not escape to the west.<span />
Hey, the answer to the question would be B.) The Depression shattered people's confidence in the government.