Multis

can someone clearly explain 'multis' to me, if my understanding is correct, then an organisation that you create would technically be a multi too?

and how do you define separate entities? based on email id? since its apparently not IP based.
https://eindia.forumotion.com/general-forum-f1/shyam-banned-t1273-15.htm#17186
article 5.1 eRepublik Laws
using similar behaviour as a criteria to judge 'multis' is pushing it a bit too far, after all birds of a feather will flock together, and thus have similar behaviour, so what is the criteria??

org are multis but you pay 5 gold for that and dont get any achievement so they are not considered multis.
if u have multiple citizen accounts, you will invite frm your account and get 10 gold per citizen so thats unfair gain.
This is multis.