Question

why do we call it a world war​

Answer 1

Answer:

From their perspective, the war was of such magnitude that it created a sense of the whole world collapsing - the term World War expressed the scale of fear the conflict unleashed.

Explanation:

Have a nice day :)

Answer 2

Answer:

$in \: that \: war \: is \: engaged \: in \: all \: or \\ most \: of \: the \: principle \: nation \\ thank \: you$