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Marie seems to be craving material things. There are animals in nature that use tools. Some animals are said to have a kind of language. But aren't humans the only ones who can use metals? Probably. This is a story about metals that have existed alongside human civilization. ↓↓↓Please also check out the members-only channel "Historica's Villa" https://ch.nicovideo.jp/mond-historica 0:00 Opening 1:15 Copper and bronze 10:52 Iron 21:21 Aluminum 33:21 Ending References for this episode: Sato Kentaro (2018) "New Materials that Changed World History" Shinchosha → https://amzn.to/48JDa7e Samaki Takeo (2021) "An Absolutely Interesting Introduction to Chemistry: World History is Made of Chemistry" Diamond Inc. → https://amzn.to/3LOUldO Kobayashi Toshiko (2020) "The Complete History of Ancient Mesopotamia" Chuokoron-Shinsha → https://amzn.to/3Q4xxID Nakamura Toru (2020) "Earthquakes and the Minoan Civilization" Interplay → https://amzn.to/3F6gKzv Other Wikipedia, etc. Twitter → / mond_historica Sister channel: Yukkuri Mondo 2 / @mond2 ◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇ BGM, SE: Audiostock https://audiostock.jp Maps of each era: Geacron http://geacron.com/ Tool used 1: Yukkuri Movie Maker 3 https://manjubox.net/ymm3/ Tool used 2: AviUtl http://spring-fragrance.mints.ne.jp/a... AviUtl speed-up plugin https://www.nicovideo.jp/watch/sm3967... We are extremely grateful to all the other sources of free material #YukkuriCommentary #History #Commentary ◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇◇