Question: Where did pluvial lakes form during the last ice age?
Disambiguated questions and answers: question: What country did pluvial lakes form in during the last Ice Age?
What region of the United States die pluvial lakes form in during the last ice age?
What states did pluvial lakes form in during the last Ice Age?
answer: United States
Southwestern
Utah and California
Natural Questions answer: southwestern United States (from the Wikipedia article "Pluvial lake")