Answer: Powder Keg of Europe.
Explanation: This is due to numerous nationalistic movements against colonial powers, Austria-Hungary and the Ottoman Empire.
They claimed that Chinese soldiers had sabotaged the railway, and attacked the Chinese army (which had just executed a Japanese spy). The Chinese army did not fight back because it knew that the Japanese were just wanting an exvuse to invade Manchuria.
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Answer:
B.THE CENTRAL INTELLIGENCE AGENCY
Answer:
The president is Andrew Johnson