Japan during World War I close of the war. The prosperity brought on by World War I did not last. Although Japan's light industry had secured a share of the world market, Japan returned to debtor-nation status soon after the end of the war. The ease of Japan’s victory, the negative impact of the Showa recession in 1926, and internal political instabilities helped contribute to the rise of Japanese militarism in the late 1920s to 1930s. Japan during World War I Japan participated in World War I from 1914 to 1918 in an alliance with Entente Powers and played an important role in securing the
Nazi crimes against the Polish nation Nazi crimes against the Polish nation Crimes against the Polish nation committed by Nazi Germany and collaborationist forces during the invasion of Poland, along with auxiliary battalions during the subsequent occupation of Poland in World War II, consisted of the systematic extermination of Jewish Poles and the murder of millions of (non-Jewish) ethnic Poles. The Germans justified these genocides on the basis of Nazi racial theory, which depicted Jews as a constant threat and regarded Poles and other Slavs as racially inferior "Untermenschen". By 1942 the Nazis were implementing their plan to kill every Jew in German-occupied Europe, and had