Answer:
The indigenous peoples of the Americas arrived in North America via the Bering Strait land bridge, which existed approximately 15,000 years ago between Siberia and Alaska, and probably also via a succession of sea migrations from Asia.
I think it is a drought but i dont know
Answer:
Chhotanagpur Plateau
Explanation:
This region has vast reserves of iron and coal ore. On top of that, iron ore is easily available at a cheap price in the region, therefore providing raw material for the industries.