Which of the following helped lead to the end the war in Europe

Answer 1

1. The D-Day invasion by Allied forces on June 6, 1944
2. The Soviet Union launching a massive counter-offensive against German forces on the Eastern Front
3. The capture of Berlin by Soviet forces in April 1945
4. The unconditional surrender of Nazi Germany on May 8, 1945

All of the above factors helped lead to the end of the war in Europe.