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2018
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Brazil is a huge country. One could easily imagine that over the course of time it would have splintered into 2, 3, or five different countries. What has kept it together?
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r/AskHistorians
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Gender in humans is determined by the X and Y chromosomes. What is the comparable mechanism for other organisms?
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r/askscience
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Brazil is a huge country. One could easily imagine that over the course of time it would have splintered into 2, 3, or five different countries. What has kept it together?
177
AskHistorians
--
10
9
8
7
6
5
4
3
2
1
0
Gender in humans is determined by the X and Y chromosomes. What is the comparable mechanism for other organisms?
1
askscience
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10
9
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4
3
2
1
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