Simplify the following text for a Grade 10 native English-speaking person.
Original: The oldest brewery in the world still in operation is believed to be the Bavarian State-owned brewery Weihenstephan , found in the German city of Freising , which can trace its history back to 1040 .
Simplified: The oldest brewery in the world is believed to be the German state-owned Weihenstephan brewery in the city of Freising , Bavaria .