Friedrich Ratzel

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Friedrich Ratzel (30 August 1844 – 9 August 1904) was a German geographer and ethnographer who helped found modern human geography. He is best known for introducing the term Lebensraum, or “living space,” a concept that later played a key role in Nazi ideology. Ratzel studied zoology and geography at several German universities and began his career as a teacher and writer. A turning point came after his 1874–75 journey to North America and Cuba, which led him to publish Cities and Cultures of North America and to propose that cities reveal how people live. He taught in Munich and later at Leipzig University, where he published major works such as Anthropogeographie (two volumes, 1882 and 1891), on how the environment shapes cultures, and Politische Geographie (1897), a foundational text in political geography. His idea of Raum (space) described how stronger nations tend to expand into surrounding areas. Ratzel’s writings helped lay the groundwork for geopolitics and influenced German imperial thinking of his time. He served in the Franco‑Prussian War and was wounded twice. He died in 1904 at Ammerland, Lake Starnberg, Bavaria.