Cold war 1945 to present By Friskin 1961 Berlin wall https://docs.google.com/document/d/1TTHS0hGiYkmUMxFrYLVcCIv8PF0UixsSlI-dIv1Fcuo/edit?usp=sharing 1961 Berlin wall https://docs.google.com/document/d/1TTHS0hGiYkmUMxFrYLVcCIv8PF0UixsSlI-dIv1Fcuo/edit?usp=sharing
