Why is it called Russian doll?

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Tags

1. #roots
2. #first
3. #mother
4. #which
5. #matryoshka
6. #title
7. #appeared
8. #russian
9. #matrona
10. #given
11. #sense
12. #nature
13. #meaning
14. #within
15. #popular
16. #dolls
17. #russia
18. #makes
19. #nesting
20. #other
21. #latin
22. #birth