What environmental effects did the new steel mills of europe and north america create?

Back then , They saw nature as an obstacle for their business.

North American transformed their environment faster than the European. In the production of cotton for example, they needed to cut down a large number of Forests, and grow cotton on that land until the soils were Delpeted

Overall , the new steel mills caused a lot of harms to the environment

Immigrants from Asia,Europe, and Latin America came to the U.S