Simplify the following text for a Grade 9 native English-speaking person.
Original: Å umadija is located between rivers Sava and Danube in the north , river Velika Morava in the east , river Zapadna Morava in the south , and Kolubara , Ljig and DiÄ ina in the west .
Simplified: Å umadija is located between rivers Sava and Danube in the north , river Great Morava in the east , river West Morava in the south , and Kolubara , Ljig and DiÄ ina in the west .