Answer:
Cause the Natives had died off. They needed slaves to do the labor of farming, so the transatlantic slave trade/the middle passage began.
Explanation: Afterwards comes about 300+ years of the most repulsive and inhumane trade possible. People are taken from their homes and treated as property. Most would die before they'd make the journey. 3-4months of grueling terror and anguish. It's something no one should bear or learn about, yet here we are, looking back into the dark past of the middle passage. It's a mistake that society might make again, and it's sad how true it is.
I believe B is the answer..
Answer:
The “Reconstruction Amendments” passed by Congress between 1865 and 1870 abolished slavery, gave black Americans equal protection under the law, and granted suffrage to black men. ... The system of sharecropping allowed blacks a considerable amount of freedom as compared to slavery.
One cause of the Decembrist Revolt was the fact that liberals were threatened by the new ruler's conservative views.