B. problems could be solved using human reason.
I believe it was the civil rights act of 1964.
The United States emerged as a leading world power after world war I due to the treaty of Versailles. This is my best answer. I hope this helps! :)
Answer:The scale of the Atlantic slave trade had a profound impact on African civilization. Slavery had a severe impact on African societies and resulted in West Africa's long-term impoverished. This amplified the consequences that already existed among its rulers, kinships, kingdoms, and society.
Explanation: