What factors led to increased demand for minerals after the civil war ?

Demand for minerals rose dramatically after the Civil War as the United States changed from a farming nation to an industrial nation. Mining also led to the building of railroads to connect the mines to factories back east. In 1859 a prospector named Henry Comstock staked a claim near Virginia City, Nevada

Explanation:

in the 1800s, chinese workers migrated to the united states, first to work in the gold mines, but also to take agricultural jobs, and factory work, especially in the garment industry. chinese immigrants were particularly instrumental in building railroads in the american west, and as chinese laborers grew successful in the united states, a number of them became entrepreneurs in their own right. as the numbers of chinese laborers increased, so did the strength of anti-chinese sentiment among other workers in the american economy. this finally resulted in legislation that aimed to limit future immigration of chinese workers to the united states, and threatened to sour diplomatic relations between the united states and china.

the constitution gives congress the power to regulate commerce "among" the several states.