Final answer:
Germany was a nation where a nationalist military regime led the country to invade its neighbors and help launch World War II.
Step-by-step explanation:
World War II (1939–1945) was a global conflict involving Allied and Axis powers. Triggered by territorial disputes and aggressive expansion, it witnessed major battles in Europe, Africa, and the Pacific. Key events included the Holocaust, D-Day, and the dropping of atomic bombs. The war reshaped geopolitics, leading to the Cold War.
The nation where a nationalist military regime led the country to invade its neighbors and help launch World War II was Germany. In 1939, Germany invaded Poland, which marked the beginning of the war. Hitler's expansionist ambitions and aggressive policies were the driving factors behind Germany's invasion of other countries, including the Soviet Union.