{"id":1041,"date":"2010-01-01T08:29:00","date_gmt":"2010-01-01T06:29:00","guid":{"rendered":"https:\/\/bronicable.com\/en\/?p=1041"},"modified":"2026-07-23T13:54:49","modified_gmt":"2026-07-23T11:54:49","slug":"on-this-day-in-bulgaria-august-29","status":"publish","type":"post","link":"https:\/\/bronicable.com\/en\/on-this-day-in-bulgaria\/on-this-day-in-bulgaria-august-29\/","title":{"rendered":"On This Day in Bulgaria: August 29"},"content":{"rendered":"<p>Politics and industry meet on August 29 in Bulgaria&#8217;s history: a prince&#8217;s quiet blessing for the 1885 union with Eastern Rumelia, and the 1954 launch of the chemical works that reshaped Devnya.<\/p>\n<h2><strong>August 29, 1885 \u2014 Winning the Prince Over<\/strong><\/h2>\n<p>In Shumen, where Prince Alexander of Battenberg was overseeing military exercises, two conspirators from the secret unionist movement \u2014 Captain Sava Mutkurov and Dimitar Rizov \u2014 met privately with the prince to sound him out on a planned union of Eastern Rumelia with the Principality of Bulgaria. Alexander gave his quiet backing, even as his own prime minister judged the plan premature.<\/p>\n<p>Just over a week later, on September 6, the union was declared \u2014 one of the defining achievements of modern Bulgarian statehood.<\/p>\n<h2><strong>August 29, 1954 \u2014 Devnya&#8217;s Chemical Giant Comes Online<\/strong><\/h2>\n<p>The soda-ash plant &#8220;Karl Marx&#8221; began operations in Devnya, the first in what would grow into a sprawling industrial complex nicknamed the &#8220;Valley of Chimneys.&#8221; Cement, sugar, and power plants joined it over the following decades.<\/p>\n<p>The area became one of communist Bulgaria&#8217;s most important industrial centres, prized for its economic output but increasingly notorious among residents for its environmental toll.<\/p>\n<p>Neighbouring days are worth a look too: <strong><a href=\"https:\/\/bronicable.com\/en\/on-this-day-in-bulgaria\/on-this-day-in-bulgaria-august-28\/\">August 28<\/a><\/strong> precedes it and <strong><a href=\"https:\/\/bronicable.com\/en\/on-this-day-in-bulgaria\/on-this-day-in-bulgaria-august-30\/\">August 30<\/a><\/strong> follows. For more, browse our <strong><a href=\"https:\/\/bronicable.com\/en\/category\/bulgaria\/\">guides to the best of Bulgaria<\/a><\/strong>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>On this day in Bulgarian history: Prince Alexander gave his backing to the unification of Eastern Rumelia in 1885, and Devnya&#8217;s first chemical plant began operating in 1954.<\/p>\n","protected":false},"author":1,"featured_media":3335,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[],"class_list":["post-1041","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-on-this-day-in-bulgaria","latest_post"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>On This Day in Bulgaria: August 29 History<\/title>\n<meta name=\"description\" content=\"On this day in Bulgaria, August 29: Prince Alexander backed the union of Eastern Rumelia in 1885, and Devnya&#039;s first chemical plant opened in 1954.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bronicable.com\/en\/on-this-day-in-bulgaria\/on-this-day-in-bulgaria-august-29\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"On This Day in Bulgaria: August 29 History\" \/>\n<meta property=\"og:description\" content=\"On this day in Bulgaria, August 29: Prince Alexander backed the union of Eastern Rumelia in 1885, and Devnya&#039;s first chemical plant opened in 1954.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/bronicable.com\/en\/on-this-day-in-bulgaria\/on-this-day-in-bulgaria-august-29\/\" \/>\n<meta property=\"og:site_name\" content=\"BRONICABLE\" \/>\n<meta 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