Concentration camp
Between 1900 and 1902, the British Empire, led by Lord Kitchener, used concentration camps.  At the time, they were fighting the Boer people in the Second Boer War in South Africa. At first, the British were not able to beat the Boers.  They reacted by putting the Boer fighters' family members into concentration camps.  They did this so these family members could not give food or help to the Boer fighters.  The British soldiers also burned down the Boers' houses and farms, and destroyed all the crops they could find.  They did this so the Boer fighters would not be able to find food or shelter anywhere.