How did mining affect the economies of the Twin Territories?

Question

A: Mining for lead, zinc, gypsum, and gold contributed to an increase in population and businesses.
B: The lack of mineral resources in the Twin Territories caused the economy to decline when the mining industry grew in the far west
C: The economy in Oklahoma Territory declined because all the mining towns were in Indian Territory
D: The economy of the Twin Territories stabilized once more people moved to the territory in search of gold

Answer 1

A: Mining for lead, zinc, gypsum, and gold contributed to an increase in population and businesses.