Answer:
There are several tectonic provinces collectively called as crystalline providences.
Explanation:
- The geology of Appalachians consists of Blue Ridge, Piedmont, Adirondack, and the New England providences. They are known as Crystalline provinces.
- The sinking of the oceans continued about 270 million year ago due to which a huge mass of rocks was pushed westwards along the margins of North America and piled up to form the mountains.
- The Sierra Nevada is the youngest mountain range on the west coast of the United States.
The answer would be the last option
Answer:
Montana
Explanation:
Montana is naturally a small state which means it will have the smallest airport.
For proof go to this website:
https://www.traveltrivia.com/answer-what-state-has-the-smallest-airport-in-the-country/
