What is a hard fork in Cryptocurrency?

Related questions

1. What is a Bitcoin hard fork?
2. What is ethereum classic used for?
3. Is there a max supply of ethereum?
4. What makes ethereum different?
5. Which country currency is ether?
6. What is ether money?
7. What is Byzantium ethereum?
8. Are katanas Chinese or Japanese?
9. What is hard fork and soft fork?
10. What does it mean when a Cryptocurrency Forks?

Tags

1. #result
2. #rules
3. #miner
4. #certain
5. #bitcoin
6. #which
7. #world
8. #phenomenon
9. #activity
10. #forces
11. #blockchain
12. #divergences
13. #cryptocurrency
14. #change