Okay kiddo, so Carl Meinhof was a smart person who lived a long time ago. He was born in Germany in 1857 and spent his life studying languages. He was really interested in something called the Bantu languages, which are spoken in a big part of Africa.
Carl Meinhof wrote lots of books and articles about these languages, and he even made a dictionary so that people could learn them better. He liked to travel to different parts of Africa to meet people who spoke these languages and learn more about them.
But Carl Meinhof wasn't just interested in languages, he also cared about people. He wanted to make sure that everyone had a chance to learn and be educated, especially kids. He was a teacher and started a school in Africa for Bantu children who didn't have access to education before.
So, Carl Meinhof was a very smart person who cared about languages and people, and he did a lot of good work in his lifetime.