The meaning of the word "history" is the study of historical records. The events that happened in times before writing are called "pre-history", and similarly the events that happened in places that didn't write things down are out of scope.

This is kind of missing the point.

What I'm saying is there are records that have either been ignored, neglected, or destroyed.

In Mali alone there are millions of historical documents [1] that have not been suitable explored. The Meroitic [2] script that contains historical records is still poorly understood

1. https://en.wikipedia.org/wiki/Timbuktu_Manuscripts

2. https://en.wikipedia.org/wiki/Meroitic_script