Question

anti - immigration sentiment in america included the following legislation of the 1920s:
the anarchist exclusion act which called for the deportation and exclusion of perceived anarchists
the emergency immigration act which introduced numeric limits on european immigration
the immigration restriction act which placed limits on immigrants from asia and the pacific islands
the national origins act which only allowed immigration from countries that had sent immigrants before 1826

Explanation:

In the 1920s, the Emergency Immigration Act introduced numerical limits on European immigration as part of anti - immigration sentiment in America. The Anarchist Exclusion Act was more about targeting anarchists rather than general anti - immigration in the sense of limiting numbers from certain regions. The Immigration Restriction Act mainly targeted Asia and Pacific islands but the Emergency Act was more significant for European immigration limits. The National Origins Act was later in 1924 and had a different quota - based system rather than just limiting to pre - 1826 immigrant - sending countries as described.

Answer:

The Emergency Immigration Act which introduced numeric limits on European immigration