第十章 After world war II 战後的欧洲各国
书迷正在阅读：神级扮演：从小丑开始、地下城之主、全球天选：开局觉醒百倍经验天赋、妖魔入侵：我成救世大剑仙、名侦探柯南续集、火影：等会，我先戴个写轮眼、神奇宝贝之无尽轮回、这个世界的穿越者有点多、异界游戏王之虚空变、潜伏火箭队，只为超梦
the rest of East Germany. ??The wall itself went through four major transformations during its 28–year history. The Berlin Wall started out as a barbed–wire fence with concrete posts， but just a few days after the first fence was placed， it was quickly replaced with a sturdier， more permanent structure made out of concrete blocks， topped with barbed wire. ??The first two versions of the wall (barbed wire and concrete blocks) were replaced by the third version of the Berlin Wall in 1965. This version consisted of a concrete wall， supported by steel girders. ??The fourth version of the Berlin Wall， constructed from 1975 to 1980， was the most complicated and thorough. It con