I am going to say 1 because it started 2.5 billion years ago and is still hapinung today
Poor People wouldn't work as much and it would be harder for them to find jobs
For the answer to the question above.
The best answer I can give is letter B.
During the civil war, there was also a competition in the global market on the supply of cotton so Europe sought other suppliers from India and Egypt and this is why the price is down after 1865