Which country invented Metro train?

Related questions

1. How fast do subway trains go in NYC?
2. How does Metro train work?
3. What is the largest subway station in the world?
4. Which is the oldest underground line?
5. Is there a metro in Budapest?
6. Which government started the Delhi Metro?
7. Is the metro in Budapest 24 hours?
8. Is Budapest safe to travel to?
9. What is the oldest metro system?
10. Do they use euros in Budapest?

Tags

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2. #electric
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5. #short
6. #those
7. #engines
8. #invented
9. #might
10. #metro
11. #steam
12. #power
13. #berlin
14. #different
15. #railway
16. #trains
17. #early
18. #siemens
19. #werner
20. #working
21. #third
22. #demonstrated