When did softball become most popular?

Answer 1

In the duration of the war, in about the 1900s maybe the 1800s.

When the men were off to war, there was no Baseball going on. So then they made a woman's baseball league. Later on, when the war was over, men took over baseball again, so then they made softball.

But remember there is no logical, physical explanation to the real game of softball, that's why they have this kind of softball...