Okay kiddo, a long time ago in history, there was a region called the Northern March. This was an area in Europe between Germany and Poland, and it was an important place because it was a border between two big countries.
Countries have borders because they want to protect their land from other countries. The Northern March was created by a king, who wanted to make sure his people were safe from invaders. He put soldiers in this area to defend against any attack from outside.
Over time, the people who lived in the Northern March developed their own culture and ways of doing things. They had to be really strong and tough to survive in that environment, because it was very cold and there were a lot of wars. They also had to know how to farm the land and make their own food, because they were kind of isolated from the rest of the world.
Eventually, as the world changed, the Northern March became less important as a border region, and it was absorbed into other countries. But for a long time, it was a place where people had to work really hard and be brave to protect what was theirs.