sweepyheadedboy-deactivated2015 asked:

Why are they ending it? I thought it just got long did the original Avatar take air?

The show is ending because that is how long the creators of the show only originally planned for somewhere around 6 episodes I believe, but then it got extended to one book of 12 episodes. After the first season aired and gained popularity Nick ordered 3 more books. So the creators of the show only planned the story to have 4 books and once this last book is done Korra’s journey will end. The original Avatar series had 3 books of 20 - 21 episodes each.