What was the biggest cause of death on the Oregon Trail?

Related questions

1. Where did the Oregon Trail start and end?
2. Can you play Oregon Trail online for free?
3. Can you still play the original Oregon Trail?
4. How far can a man walk in a day?
5. How far can a horse pull a wagon in a day?
6. How far did a wagon train go in a day?
7. How was Oregon acquired?
8. Why was the Oregon Trail dangerous?
9. How did Pioneers survive the Oregon Trail?
10. Can a horse run itself to death?

Tags

1. #reputation
2. #causes
3. #unseen
4. #death
5. #known
6. #worst
7. #destroyer
8. #accidents
9. #biggest
10. #survive
11. #cholera
12. #disease
13. #asiatic
14. #nearly
15. #oregon
16. #trail