[ Hey, to someone who doesn't know what galaxies are, the fate of the world seems about as big as it can get!

Still, it's a familiar story for most. Thankfully, Toph's formally educated enough to put it into familiar words, though her tone softens as she does. ]

It's a lot to explain... They always had a strong military and economy. The avatar was gone, and a comet was coming that made them even stronger.

Basically, they saw a chance and took it.