It didn't . Its Kekkei Genkai of Uchiha clan. Its hereditary eye so no one can make them. It is activated if one from Uchiha clan member r in stress or emotional.
He doesn't create it, he gets it after he kills Itachi and madara tells him the truth about his brother.
sora doesnt get kyubbi because that is from naruto and call it by its name the nine tailed fox or jinchurriki
yes it does you have to get itachis sharigan by killing ur closest friend and you get the normal sharigan by closing ur eye tight and then opening it really really fast
most likely
yes
fire
Part 2 episode 12
yes because he is in the uchiha clan.
It has not been seen in action
It has not been seen in action
i don't know,and i don't think he gets sharingan
No, they can be separated.