How did mining contribute to western migration in the 1800's?

the territories were organized

Explanation:

The contribuite was that the territories were organization,  and plans were established to bring the new territories into the Union as states as they gained sufficient population.The tendency for Americans to move west has been part of the national makeup since the end of colonial time.

Mining assumed a significant task in the settling of the West. Demand for minerals rose significantly after the War as the in America transformed from a cultivating country to a modern state. Mining additionally prompted the structure of railways to interface the mines to processing plants back east.

Removing minerals from the severe piles of the American West required creativity and tolerance. Early miners removed shallow stores of metal in a procedure called placer mining, utilizing essential devices like picks and scoops.

i think it is the third one.

where are the choices