Simplify the following text for a Grade 8 native English-speaking person.
Original: The Augsburg Confession was written in both German and Latin , and was presented by a number of German rulers and free-cities at the Diet of Augsburg on June 25 , 1530 .
Simplified: The Augsburg Confession was presented by a number of German rulers and free-cities at the Diet of Augsburg on June 25 , 1530 .