Answer:
Ireland or Germany
Step-by-step explanation:
The Westward expansion and the Louisiana purchase allowed people to move toward the West in search of land. Beginning of the 19th century, the United States was predominantly an agricultural country because people engaged in farming. Because of the availability of cheap land led many Europeans to migrate to America during the 1840s and 1850s. Irish people left Ireland because of the potato famine (1845-47) that brought thousands of immigrants into the country. The Revolution of 1848 in Germany created considerable emigration.