Why was the Seven years war not considered the First World War?

Why was the Seven years war not considered the First World War?

Because there weren't any Asian countries (especially Japan) had participated.

Because there were other world wars prior to it

Because it did not contain every major power

The Ottomans and Poles weren't involved

What a dumb system, by this logic there hasn't been a world war because neither ww1 or 2 involved south america.

There was fighting in India.

>neither ww1 or 2 involved south america.

Brazil was in both wars and in both wars there were naval battles in the Falklands and around the South American Atlantic coasts.

>Because it did not contain every major power
>The Ottomans and Poles weren't involved

Then why wasn't this one the first world war?
It has the Ottomans and Poles

>involved every great power of the time except China
>main fighting in Europe but major campaigns also in North Africa and the Levant
>minor campaigns and naval battles in North America
>major social and political effects

Huh.

Qing weren't involved. it's fair to call them a major power in 1790.

I understand it's arbitrary but this is just the generally accepted reason.

The use of the term 'World War' is only used in conjunction of the first and second. People didn't call it The 1st World War at first, but rather to represent the connection between it and the second.

>because neither ww1 or 2 involved south america.
Yes they did, idiot.