Will give brainliest to best answer(s)!!

1. Since these materials are greatly valued to make these popular products, the country mining these metals should have a good economy. Due to companies needing to purchase the mined metals in order to make products with the metals.

2. The economy in other countries without these metals would be lower. Unless they have valued goods that would higher their economy.

3. If mining increases, they would most likely be working on land that has potential for housing, businesses, etc. Due to the land loss for those potential structures the population would be lower since there is less land to accommodate increased population.