Tariffs is the answer, Tariffs are usually levied by domestic governments to protect new industries against foreign competition, to protect aging industries against foreign competition, to protect against foreign companies offering their products for a price lower than their costs and to raise revenue.
They feared that a strong national government may abolish slavery.
It just kinda did what it wanted to do no explanation
<span>Qin Shi Huang, also known as </span>Qin Shi Huangdi I believe
It would cause erosion by washing away the soil into the ocean