"A. Japan suppressed the decades-long Taiping Rebellion" was a major impact of the Meiji Restoration in Japan, since the purpose was to restore traditional values.
World War I, also known as the First World War, the Great War, or the War to End All Wars, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918
I believe it was called Manifest Destiny :)
We really don't know if it was a hydrogen bomb or not. It is seriously doubted though because their are seismic detectors all over the world and the bomb wasn't as strong as it should have been. The U.S have said that the records that the bomb gave off was around a 4.8 magnitude event. A hydrogen bomb would've given off a 6.8. So their was definitely an explosion, but not as big as korea claims it to have been.