Why does baseball have 9 innings?

Related questions

1. Do National League teams play American League?
2. Why do MLB teams play 3 games?
3. Do pitchers bat in National League?
4. What is opening day for Major League Baseball?
5. How does baseball end?
6. Why are baseball innings called innings?
7. How does MLB postseason work?
8. What is the highest scoring baseball game ever?
9. What time does Dodgers Opening Day start?
10. Does every MLB team play on opening day?

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