求翻译：四大文明古国中的三个都曾被侵略者征服，原因就是这三个国家的人民缺乏对民族历史的认知，当时的社会，没有能力承担历史教育的责任，对历史继承的忽视可以原谅，但如今社会发展了，更因该重视对历史的继承和发扬。是什么意思？

Three of the four ancient civilizations have been the aggressor in the conquest of reason is that the people of these three countries the lack of awareness of national history, when society can not afford to bear the historical responsibility for education, the neglect of the historical inheritance

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In four big ancient nation three all once the invaded country conquered, the reason was these three national people lacks to the national history cognition, society then, did not have ability to undertake the historical education responsibility, might forgive to the historical inheritance neglect, b

Three of the four ancient civilizations have all been aggressors conquered, because the people in the three countries lacking awareness of national history, the social, not capable of taking on responsibility for history education, to the neglect of historical inheritance can be forgiven, but now th

Three of the four ancient civilizations have all been aggressors conquered, because the people in the three countries lacking awareness of national history, the social, not capable of taking on responsibility for history education, to the neglect of historical inheritance can be forgiven, but now th