Not enough information to answer. State in which country?
North Dakota and surrounding states
nevado , lake thao, rocky mountain
Geography dictated it - settlements in valleys divided by mountains and water grew larger into city-states.
The first Andean states emerged in the valleys on the western side of the mountains.
Delaware
The plural form is valleys.
Greece was mountainous, with fertile valleys. Tribes took over valleys and developed independent city-states established themselves, defending their territory against interlopers.
There are plenty of valleys in Wales.V-shaped valleys are formed by water flow.U-shaped valleys are formed by glaciation.
How have valleys change over time?How have valleys change over time?How have valleys change over time?
The possessive form for the plural noun valleys is valleys'.
The likely word is the plural noun "valleys."
Valleys.