The long march was a tactic of retreat into the mountains so that they could survive because they were facing elimination.
B. The Wright brothers . . .

Answer:
The U.S. suffered badly but not as bad as the soviet union, China, poland, India, etc. The U.S lost . 1,027,000 to 1,700,000 lives, the soviet union lost 20,000,00 to 27,000,000 lives, etc.
Explanation:
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.
Answer:
B
Explanation:
The Treaty of Paris of 1783, was a peace treaty negotiated between the United States and Great Britain that officially ended the revolutionary war and recognized the independence of the thirteen states