What immigrant groups started arriving in the united states in the 1840 and 1850s? and where did they settle?

Irish immigrants started arriving in the United States in the 1840 and 1850and where did they settle.

Explanation:

Many of the emigrants from Ireland who came to work on the construction of the Erie Canal. Suddenly the rate of immigrants from Ireland changed drastically. Potato blight - a disease brought famine to Ireland by affecting the staples. That, in turn, forced the Irish people to move from their country.

Ireland was literally the poorest country in Europe even before the famine. After the famine, they didn't have money, food and with little hope, they moved from their homes. And mostly they moved to North America in the mid-1840s. Some of the people were died because of diseases and hunger.