Final answer:
Alexander III promoted pogroms in Russia by encouraging violent attacks on Jews and implementing policies that restricted their rights and freedoms.
Step-by-step explanation:
Alexander III promoted pogroms, which were violent mob attacks on Jews in Russia. The government encouraged these attacks by portraying Jews as the cause of political, economic, and social problems. The tsarist autocracy also implemented policies that restricted the rights and freedoms of Jews. These pogroms led to significant Jewish migration to the United States.