The Battle of Gettysburg was the turning point of the Civil War for one main reason; Robert E. Lee's plan to invade the North and force an immediate end to the war failed.
Being responsible helps when your mostly in school,If your a good student you may get to help out with fun things,for example a school dance or you just get to do easier stuff and it helps when your teachers like you.
I think the closest answer would be Conflict that arises from misunderstandings and trickery are resolved by the end of the play. The term 'tragedy' would be a terrible downfall that the character brings on his/herself and sometimes other people suffer as well. A tragedy is not bad luck
hope this made sense ;)