concentration camp (n.)
1901, "compound for noncombatants in a war zone" (see concentration); a controversial idea from the second Boer War (1899-1902), and the term emerged with a bad odor. In reference to prisons for dissidents and minorities in Nazi Germany from 1934, in Soviet Russia from 1935
The term "concentration camp", as I've pointed out, comes from the reconcentrados (reconcentration camps), that were set up by the Yanks during the Philippines' war of independence.
The Americans were also rounding up Native Indians into concentration camps as far back as the 1830s, long before the British were using them for Boer POWs.
That the British invented concentration camps is a MYTH peddled, even on websites, by ignoramuses.
The Polish historian Władysław Konopczyński has suggested the first concentration camps were created in Poland in the 18th century, during the Bar Confederation rebellion, when the Russian Empire established three concentration camps for Polish rebel captives awaiting deportation to Siberia.
The earliest of these camps may have been those set up in the United States for Cherokee and other Native Americans in the 1830s; however, the term originated in the reconcentrados (reconcentration camps) set up by the Spanish military in Cuba during the Ten Years' War (1868–1878 ) and by the United States during the Philippine–American War (1899–1902).
Internment - Wikipedia, the free encyclopedia