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[美国学生人类历史] 美国学生人类历史(MP3+中英字幕)第138期:封建制度(1)
How central Europe, attacked from sides, become an armed camp and why Europe would have perished without those professional soldiers and administrators who were part of the feudal system2017-06-08 编辑：sophie
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[美国学生人类历史] 美国学生人类历史(MP3+中英字幕)第139期:封建制度(2)
Unfortunately the power of the kings of France did not stretch beyond the moat of their royal residence,2017-06-09 编辑：sophie
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[美国学生人类历史] 美国学生人类历史(MP3+中英字幕)第140期:封建制度(3)
These dukes and counts and barons had sworn to be faithful to the king who had given them their2017-06-11 编辑：sophie
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[美国学生人类历史] 美国学生人类历史(MP3+中英字幕)第141期:封建制度(4)
He looked after the dikes so that the countryside should not be flooded (just as the first noblemen had done in the valley of the Nile four thousand years before).2017-06-14 编辑：sophie
