These sources explore the history and geographical evolution of the Akatsuka area in Tokyo, particularly focusing on its name origins, historical significance, and the impact of urbanization. One set of texts discusses the etymology of "Akatsuka" (赤塚), suggesting derivations from "red earth" (赤土) used for bricks or from old burial mounds (荒墓/荒塚), noting its medieval prosperity as Akatsuka-gun. Another source provides a cultural and historical overview of Akatsuka Village, highlighting specific landmarks like Akatsuka Castle, the Akatsuka Botanical Garden, and Akatsuka Fudōson, linking them to local legends, art, and the area's transition from a rural to an urban setting. Finally, an academic paper examines the urban transformation of the neighboring Maeyatsugawa River, which flowed through Akatsuka and Tokumaru, illustrating how the natural landscape, including farmland and rivers, was completely altered and eventually culverted into greenways due to intense residential development and public works projects from the Edo period through the post-war era. The collection also confirms that Akatsuka-mura (赤塚村) existed in multiple regions across Japan, including Tokyo, Niigata, and Ibaraki.

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