How might mining and ranching impact the native tribes living in the west?

The transcontinental railroad increased both economic growth and the population in the West. They also sold land to settlers, which encouraged people to move West. New railroads helped businesses. West- ern timber companies, miners, ranchers, and farmers shipped wood, metals, meat, and grain east by railroad.

all

explanation:

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering