Why did Cleopatra kill her brother?

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Tags

1. #murdered
2. #arsinoe
3. #believed
4. #throne
5. #brother
6. #following
7. #cleopatra
8. #remarried
9. #considered
10. #rival
11. #ruler
12. #sister
13. #engineered
14. #younger
15. #execution
16. #ptolemy