Five Nations tribe

SENECA

This Iroquois nation shares its name with a New York county and a famous falls.

The clue "Five Nations tribe" refers to the SENECA, one of the original five tribes that formed the Iroquois Confederacy (also called the Haudenosaunee). The other four were the Mohawk, Onondaga, Oneida, and Cayuga, making "Five Nations" a direct historical reference. No wordplay is involved—it’s a straightforward cultural and historical clue pointing to the tribe’s name.