It turns out that most of the major language families are related into one superfamily, referred to as Indo-European. They are associated with various groups of migrants that appeared during the
BronzeAge, around 2000-1600 BC. Huge amounts of information about ProtoIndoEuropean
? (PIE) lexicon and grammar have been inferred. Discussion about actual proto-IE culture has been stalled, though, by its association with the racist doctrines of NaziGermany
?.
The various subgroups of Indo-European include:
CelticLanguages?
GermanicLanguages
ItalicLanguages?, including Latin and its descendants, the RomanceLanguages
IllyrianLanguages? (now restricted to AlbanianLanguage?)
GreekLanguage?
SlavicLanguages
AnatolianLanguages? (extinct)
IndoIranianLanguages, e.g. SanskritLanguage?