Simplify the following text for a Grade 8 native English-speaking person.
Original: The Alps is one of the great mountain range systems of Europe , stretching from Austria and Slovenia in the east through Italy , Switzerland , Liechtenstein and Germany to France in the west .
Simplified: The Alps is the greatest mountain range of Europe . It reaches from Austria and Slovenia in the east ; through Italy , Switzerland , Liechtenstein and Germany ; to France in the west .