Talk:Flying bison/@comment-92.29.25.53-20130528153742/@comment-5888498-20130606151607

Azula clearly said by herself that the airship could NOT keep up with Appa. (this means; sky bisons are faster)

BESIDES, the Air Nomad genocide, where the airbenders and sky bisons were killed happened at a time where the Fire Nation DIDN'T retrieve Earth Kingdom technology (the Mechanist) to use it as their own.

The mechanist was being extorted on the last few years, allowing for stuff like the air baloons,airships,tundra tanks, train tanks and even the Drill.

This means: no mechanist = no inventions that you mentioned.