cold war 1945 to present By lockjon 1947 Cold War https://docs.google.com/document/d/1DfCqUzbiHZngBa4A5QIQPPQZ6ZQyGdZpMux4B-bqPlI/edit?usp=sharing 1961 Berlin Wall https://docs.google.com/document/d/1GCK36hooraRf3h2CAaz4XXlPwdTne7GgFVBySuUKdd0/edit?usp=sharing
