How might the coal industry decline of the early 1900s in New Mexico have
been prevented?

So much so that carbon emissions from coal in the U.S. electricity sector are more than 50% lower today than just a decade ago. This is a result of the declining economics of coal power plants due to low natural gas prices, increasing numbers of low-cost renewable plants, and more stringent environmental regulations.

harding's opponent in the 1920 election was ohio governor and newspaperman james m. cox, who had won the democratic nomination in a 44-ballot convention battle. harding rejected the progressive ideology of the wilson administration in favor of the laissez-faire approach of the mckinley administration.