The answer is c the discovery of oil
Reconstruction is largely seen as a failure, and many historians believe this was primarily because the South for so long had been dependent on slaves that in one swift motion the South's entire livelihood shifted. This dramatic shift was too much for the Southerners to absorb at once, and harsh Jim Crow laws sprang up.
<span>Pinckney's Treaty was a treaty that established intentions of friendship between the United States and Spain.
</span>
Best Answer choice is:
It granted the united state's access to both the Mississippi River and the port of New Orleans.
The treaty was signed in San Lorenzo de El Escorial on October 27, 1795, and established intentions of friendship between the United States and Spain.
