What was the worst fire in US history?

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Tags

1. #society
2. #firefighters
3. #acres
4. #wildfire
5. #believed
6. #western
7. #great
8. #history
9. #largest
10. #million
11. #mostly
12. #through
13. #according
14. #idaho
15. #northern
16. #forest
17. #burned
18. #montana
19. #killed
20. #people