Based on society and technology...hat age/century would you say the avatar is in based on Earth-Years?

It's hard to tell because they have things from different centuries in the one, my guess is about 16th century.

its a hard question cause there is a sense of technology in the fire nation, but not in the other 2 ( secluding Air Nomads) id say 1800's for FN and like 1200's for Earth and Water

1400 in China I would say.

I don't think it earth (have you seen the map?), so I don't think any century could apply. There was that bit about conquer Chin in the episode "avatar day". The real life conquer chin (Qin Shi Huangdi) founder/conqueror/first emperor of the china lived around ~220BC.

The real world didn't start using metal until just a few centuries ago. I think it would be at least the 1800s in the FN, as stated above. EK and WT would be farther behind than the FN, but I think that's only because the WT and EK can depend on bending for shelter and for other survival things. The EK doesn't use metal because they can't bend it. It is easier and faster just to bend to create quick walls or even cities. The WT don't have many resources at all, and they aren't a very large civilization. For the FN it is quick to make metal and the earthbenders can't bend it, so the FN is doing pretty swell??

Alternative universe, Fire Nation??undergoing an Industrial Revolution, Ask a Question, Get an Answer II, not entirely original.

A mesh of eras. The ancient, the industrial and the primordial.

talking about FN technology, what stops them from developing Cannons??
They have metal, gunpowder, fire, ships.
just imagine a FN ship with 60 cannons (30 on each side) IT WOULD ROCK!

Ever watched Princess Mononoke? If so, then a question along the lines of, "Why don't they have Guns in the Avatar world?" may arise.??Same thing.

Hard to say any era really. We're looking at an alternate world which is just a mash of different eras.

I'd say the average, 1200's, 1300's, perhaps 1400's at the most.

I could say a mixture of 1400s through the 1800s and maybe the early 1900s.

I think there is no specific centrey the Avatar world is in. its like a bunch of cnteries smushed into 1. for all we know cell phones could show up next eppisode.