My answer is Louisiana purchase.
Alexander Palmer justified the Palmer Raids of 1919 and 1920, because he believed there was a serious sense of urgency in raiding and deporting people he perceived were a threat to American ideals and believed it was his duty to protect the United States from Communism. He did not want to be stopped from this project and appointed people to take over when he was unable to lead the raids himself.
Of what is listed Germany lost the highest percentage of its population. Their numbers, though, were no where near the percentages of what was lost by the USSR. More men were lost there. Russia actually had both men, women, and children fighting in the war. This allowed for a greater chance of more loss of life.
group of states including the southeastern.