Who was affected by the emergency quota act? a) african americans wishing to migrate north. b) foreigners wishing to come to the united states. c) native americans wishing to stay on tribal lands. d) u. s. citizens who were living abroad and wishing reentry.

Hi there!

B) Foreigners wishing to come to the United States. 

The Emergency Quota Act was also known as the Emergency Immigration act of 1921.  It pretty much was the government saying, "Only a few of you foreigners are allowed into our club!" 

"Referred to as the 1921 Quota Act, this legislation utilized immigration statistics to determine a maximum number of immigrants allowed to enter the United States from each nation or region. The numbers were skewed to favor immigration from western European nations while severely curbing immigration from areas perceived to be undesirable." - https://immigration.laws.com/emergency-quota-act That's for a little more information if needed.

Southern secession is the event or issue that historians can gain insight from this excerpt.