French explorers primarily searched the "<span>Mississippi and St. Lawrence" rivers, but it should be noted that individual, smaller-scale explorers went to other rivers as well. </span>
On 27 January 1945, Auschwitz concentration camp—a Nazi concentration camp where more than a million people were murdered—was liberated by the Red Army during the Vistula–Oder Offensive. Although most of the prisoners had been forced onto a death march, about 7,000 had been left behind.
