A historical region in Germany, or referring to ornamental military coat buttons and trim (from Brandenburg uniforms).
Named after Brandenburg, a German state and former kingdom that became famous for its imperial uniforms and military style. The decorative frogging and buttons from Prussian military dress became known as Brandenburg trim.
Brandenburg gave us the word 'Brandenburg concertos' from Bach, and also the fashion term for those frog-button closures on coats—one place name influenced both high classical music and formal fashion across Europe!
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