What evidence does Zinn provide to illustrate the fact that the economic crisis made workers adopt more radical tactics than they had used during periods of economic growth? Why would this happen?

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

d.

the northwest territory became the most densely populated area in the u.s.

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done.

during the hitler era and it caused them to declare war on germany