Simplify the following text for a Grade 8 native English-speaking person.
Original: Kupferhof Bauschenberg had a great influence on the brass industry in the city which made Stolberg the world leader in brass production for more than a century .
Simplified: The Kupferhof Bauschenberg was a brass producing factory built in the 17th century in the German city of Stolberg . It had a great influence on the brass industry which made Stolberg world leader in brass production for more than a century .