What can be inferred about the increase in immigration between 1846 and 1851?

port of New York from 1846 to 1854 and whose ship manifests list their Irish ... United States in the wake of the Great Famine can be traced in the surviving ... we cannot be sure that the Irish emigration from 1851 onward matched the ... increase in immigration due to the failure of the potato crop in Ireland.

Explanation:

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abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.