Why did the Battle of Stalingrad happen?

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Tags

1. #german
2. #germans
3. #point
4. #battle
5. #russia
6. #considered
7. #germany
8. #target
9. #defeat
10. #turning
11. #stalingrad
12. #final
13. #europe
14. #retreat
15. #world
16. #after
17. #historians