Mass starvation in Ireland in the 1840s led directly to the
(1) formation of communes
(2) granting of independence
(3) migration of people overseas
(4) usage of petrochemical fertilizers
Mass starvation, or the Great Famine, in Ireland in the 1840's directly led to the migration of people overseas. Many Irish people emigrated out of Ireland and immigrated to the United States.
In the 1840s, there was a potato famine in Ireland which led to thousands of people to emigrate from the country to the United States so your answer would be 3. Hope this helped!
