From The Land, To The Air, To The Stars - An Interplanetary Endeavor

[Harbinger Ace]

You seem to be missing the forest for the trees, here. It isn't just the time, it's the structural elements that cause military technology to develop in the first place. The OP seems to be suggesting that the Sue nation somehow went from a nation of freed slaves without any real industry or significant infrastructure (cultural or otherwise) to having modernish technology faster than Earth did, with basically none of the things that caused technology to progress IRL. And the tea missiles thing is a reference to the fact that hand cannons were around in 1396 Europe.

Click to shrink...

Nearly 500 years isn't immediate. Regardless, the story is being overhauled to focus on the space program I actually desired to write.