Simplify the following text for a Grade 9 native English-speaking person.
Original: Although the Slavic languages split from a common proto-language later than any other group of the Indo-European language family , enough differences exist between the various Slavic dialects and languages to make communication between speakers of different Slavic languages difficult .
Simplified: The Southern slavic languages are a language family inside the slavic languages part of the Indo-European languages .