The correct answer is <span>a. Admission of California as a free state, elimination of slave trade in Washington
Although California is technically located in the south, it was admitted as a slave free zone in order to keep the balance of slave and non-slave states in the congress. The elimination of slave trade in Washington made it illegal to trade in slaves in other areas too if they wanted to eliminate slavery completely, which was disliked by the south.</span>
It would be "a. Admission of California as a free state, elimination of slave trade in Washington," that contains provisions of the legislation aimed at resolving a slavery related issue, since this was meant to keep a "balance" of slave and free states represented in Congress.
<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>
