Answer: There was fear and prejudice towards the Germans and Communist and that expanded to include all immigrants. They signed the Emergency Quota Act, which limited immigration: only allowing a certain percentage of ethnic groups into the united states.
B. unsanitary conditions in the meat packing business
Answer: Most likely the industrial revolution.
Explanation: The use of machines in production became more and more prevalent, eventually many factories were built in cities which caused pollution therefore making the air gross.
