The United States gained it’s independence by The American Revolution, which would be 4.
B is correct.
please vote my answer brainliest. thanks!
"(2) Salt mined in the Sahara was exchanged for gold" is most closely
<span>associated with the West African civilizations of Ghana and Mali since demand for salt was higher. </span>
Well that's easy it's the last one that all slaves should be freed through the United States.