There was a demand on enslaved people because of the increase of cotton production since the cotton gin was invented.
Greek playwrights explored moral and social issues, and relationships between the people and the gods. They also wrote tragedies to relieve people of pity and fear and comedies which ridiculed modern day issues.
The answer is D to your question
The Opium Wars were a series of wars between Chine and Great Britain. It started when Chine started to refuse the shipments of Opium. The war was a fail for China, this means that answer A, C, and D are wrong. The only answer left is B. Please contact me if you want more information on the opium war.
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Iraq, Syria, Lebanon, Cyprus, Jordan, Israel, Palestine, Egypt, as well as the southeastern fringe of Turkey and the western fringes of Iran. I hope this helps! I also hope its correct:)