how do electrum know you created a wallet offline?

hello!

I have an intruiging question, let's say you create an electrum wallet on an offline device and you never went online, then you saved the seed words and then deleted the wallet file permanantly.

first question:

how do electrum know you created a wallet without ever going online?

Second question:

Couldnt elctrum on an other offline device create a wallet with the same seed and therefore duplicate a previously wallet created offline?