From Wikipedia
Information
I believe that national organization are created how players involved in government will use them but today most of them are used but individual players (per my believe from what i see on monetary market) to wash dirty money created with multy accounts. With current economy model is simply impossible to make lot of gold like in past but if you check monetary market you can see national orgs selling hundreds and sometime and thousand of gold. Only way to make that amount of gold is with multy accounts. Money created on that way are used in battles or to build accounts what make game even more unbalanced for players who want to play fair. Also is not fair for some country to have 2-3 national orgs and some to have hundreds...
Example:
National Org -- belong to state goverment and suppose to be used only by government officials
Citizen org (removed as per wiki) -- belong to player