Where did the large numbers of scotch-irish immigrants settle? a. the backcountry b. the northern part of new york. c. the coastal area of new jersey and delaware. d. the susquehanna river valley

i think maybe d i hope this helps

A. The Backcountry

Explanation:

The Irish group that was defined by themselves as Scotch-Irish, even though most had no Scottish ancestry  (to differ themselves to the other Irish immigrants, who were mostly catholics) became settled much earlier, decades before the others, in fact, primarily in the backcountry of the region called Appalachian region.

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