D and B I’m almost certain but if you’re still not sure I would look it up or ask ur teacher for help
<span>The groups responsible for decimating the buffalo herds of the great plains in the late nineteenth century were the railroads and irresponsible hide hunters. Both of which sought to further their prosperity at the cost of those buffalo herds.</span>
Answer b so have a wonderful life
4. Groups advocated safer working conditions for factory workers.
