<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the "Slave trade", since this trade gave Britain a large amount of free labor with which to build settlements and extract wealth from the Caribbean in the form of sugar. </span></span>
Slavery helped contribute to the south's cotton boom during the 1800's. this cotton boom helped raise the economy up. But during Civil War slavery was banned from the U.S. leaving the south after their defeat to lose the slaves and dropping the south into an economic depression.
In the beginning, of the Civil War the North and South were not fighting over slavery. But as the War progressed, it suddenly became a War about freedom. Thus, A, The War would bring an end to slavery, is your answer.
The Great Migration was the relocation of more than 6 million African Americans from the rural South to the cities of the North, Midwest and West from about 1916 to 1970.
His political philosophies form its foundation
John Locke was a very famous Enlightenment philosopher featuring a plethora of individualism in both his concepts and beliefs.
Hope this helps! :)