Here's why:
* Languages have evolved over thousands of years. The first languages were likely very simple forms of communication, possibly using gestures and sounds.
* No one knows for sure when language first developed. There's no evidence of a "first" language, and it's likely that different forms of communication emerged in various parts of the world.
* English is a relatively young language. It developed from Germanic languages, which themselves evolved from Proto-Indo-European, a language spoken thousands of years ago.
So, while English is a widely spoken language today, it's not the first one.