由于地缘文明的差异 ,东西方封建社会的发展进程呈现出全然不同的面貌。西欧大陆的土地气候条件适宜农耕。当封建制度形成以后不久 ,那里的游牧经济被改造成农业经济 ,那里的游牧民族被同化成农业民族 ,由此从一个方面推动西欧地区的封建社会能够更快地演进到高一级的社会形态。相比之下 ,东亚大陆的蒙古高原等北方地区的土地气候条件不适宜农耕 ,所以该地区一直未能实现农业化。在漫长的历史时期 ,北方地区不断滋生的游牧民族 ,对黄河—长江流域为主体的农业地区进行周期性侵袭 ,严重地制约了这一地区的社会发展 ,相当程度地造成了处于东亚农业文明区的中国封建社会长期延续。 Due to the difference of geo-civilization, the development process of the feudal society in east and west shows a totally different appearance. The land climate in Western Europe is suitable for farming. Soon after the feudal system was formed, the nomadic economy there was transformed into an agrarian economy where nomadic peoples were assimilated into agro-ethnic groups, which in one aspect facilitated the feudal society in Western Europe to evolve more rapidly to a higher social form . In contrast, the climatic conditions in northern China, such as the Mongolian Plateau in the East Asian mainland, are not suitable for farming. Therefore, the region has not been able to achieve agriculturalization. During the long historical period, the nomadic tribes that breed constantly in the north periodically attack the agricultural areas mainly in the Yellow River and the Yangtze River Basin, seriously restricting the social development in this area, and to a considerable extent, The long history of Chinese feudal society.