I believe the answer is: B.because of advances in science, medicine, technology, and the arts
During the hand civilization, China developed many advancement in use of herbs for medicinal purpose and adopted many technology from all across the world which increase their agricultural production capacity.
Their artworks were also developed to the point where it became a hot commodity among European nobles.
If their rights were being infringed upon, saw rules/laws as unjust or unfair
Union victory at Antietam, provided president Abraham Lincoln the opportunity he had wanted to announce the Emmancipation Proclamation.
Answer:
One of the most pressing challenges African states faced at Independence was their lack of infrastructure. ... Rich as many African countries were in cash crops and minerals, they could not process these goods themselves. Their economies were dependent on trade, and this made them vulnerable.
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