{"id":622066,"date":"2026-01-18T21:13:36","date_gmt":"2026-01-18T20:13:36","guid":{"rendered":"https:\/\/cronologia-universale.it\/1910-12\/"},"modified":"2026-01-18T21:13:36","modified_gmt":"2026-01-18T20:13:36","slug":"late-19th-century-3","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/late-19th-century-3\/","title":{"rendered":"late 19th century"},"content":{"rendered":"<p>Aluminum is worth about one hundredth of silver. In 1855, when an industrial process was first developed to extract it from bauxite, it cost 12 times as much as silver. The use and diffusion of aluminum went from specific to common and finally banal, a process that took millennia for iron and copper.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Aluminum is worth about one hundredth of silver. In 1855, when an industrial process was&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[41],"tags":[],"class_list":["post-622066","post","type-post","status-publish","format-standard","hentry","category-s-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>late 19th century - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/late-19th-century-3\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"late 19th century - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"Aluminum is worth about one hundredth of silver. 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