西スラヴ人
Culturally, West Slavs developed along the lines of other Western European nations due to affiliation with the Roman Empire and Western Christianity. Thus, they experienced a cultural split with the other Slavic groups: while the East Slavs and part of South Slavs converted to Orthodox Christianity, thus being culturally influenced by the Byzantine Empire, all the West Slavs converted to Roman Catholicism, thus coming under the cultural influence of the Latin Church.