American History B Timeline By natasha.york Feb 7, 2011 The Great Migration 1910 to 1930- 1910 to 1930- Mass amounts of African Americans migrated North Feb 28, 2011 Emergency Quota Act and Immigration Act 1924 The Immigration Act of 1924 is a U.S. federal law that limited the number of immigrants who could come to America from other countries to 2%.