WILL MARK BRANLIEST How did the Great Northern Railway affect the region’s environment? Check all that apply.

Sparks from train engines increased the number of forest fires.

Fumes from locomotive cars made the surrounding soil infertile.

Boring a tunnel into the mountains caused a massive rockslide.

Workers cleared forests in the area and left a barren landscape.

Empty slopes resulted in an increase in avalanches in the wintertime.

Mining for coal in the Cascades to run the railroad hurt the landscape.