What event symbolized the fear of immigrants
during the Red Scare?

World War I

Explanation:    World War I, which led many to embrace strong nationalistic and anti-immigrant sympathies;

   The Bolshevik Revolution in Russia, which led many to fear that immigrants, particularly from Russia, southern Europe, and eastern Europe, intended to overthrow the United States government;

the three-fifths compromise was proposed by james wilson and roger sherman, who were both delegates for the constitutional convention of 1787. however, the three-fifth compromise has its roots further back in history, dating back to the continental congress in 1783. the compromise was a result of the apportionment of taxes being related to land values.

hope this : )

1st and 3rd : ) now lemme smash