The Question and Answer section for Twilight is a great resource to ask questions, find answers, and discuss the novel.
wolves are scum.
Though Jasper did serve in the Conferderate Army, he is never portrayed as a racist character. He was simply a southern boy, who participated in the war in the South.... where he lived. The novel is not about the Civil War, nor is Jasper's part in...
We know that Twilight Sparkle has coursed magic kindergarten, so we can assume that she is at least 6 years old. Since no pony is studying in a college we can assume that they're 17 or older.