Here are the correct responses for each of your questions:
14. What was the significance of the Battle of El Alamein in the North African Campaign?
Response: It was a turning point that led to the retreat of Axis forces.
15. Which was a MAIN reason that the Battle of Stalingrad was a significant turning point in World War II?
Response: The Soviet defeat of German forces marked the beginning of retreat for the Germans on the Eastern Front.
16. How did the use of atomic bombs contribute to the outcome of the Pacific Theatre?
Response: They forced Japan to surrender, effectively ending the war.
17. What was the significance of the D-Day invasion?
Response: It allowed the Allies to begin liberating Europe from Nazi rule.