whatever you're trying to do here because I personally am not familiar with them.

You didn't specify you were talking about the US. I was simply pointing out that your audience includes people from outside the US. People that are tired of Americans acting like they are the default people of the internet.

As far as I understand it, the baby boom is a particularly US term.

It happened across the western world. It had honestly not a lot to do with WWII, and actually was caused by Demographic Transition due to factors like healthcare improvements, better food supply from improved farming techniques, better sanitation, etc. Essentially, it wasn't "let's have more babies" it was "all the babies we're having are surviving to adulthood oops". Not having another great war 20 years later also helped.