Simplify the following text for a Grade 9 native English-speaking person.
Original: Medieval Latin was the form of Latin used in the Middle Ages , primarily as a medium of scholarly exchange and as the liturgical language of the medieval Roman Catholic Church , but also as a language of science , literature , law , and administration .
Simplified: Medieval Latin was the form of Latin used in the Middle Ages . It was mostly used by scholars and as the liturgical language of the medieval Roman Catholic Church , but also as a language of science , literature , and administration .