Complex sentence: During the Fourth Century, the Eastern Germanic, or Gothic Tribes, were converted to Christianity, largely through the efforts of Bishop Ulfilas, who invented the Gothic alphabet, and translated the Bible into the Gothic Language.
Split into simpler sentences: During the Fourth Century, the Eastern Germanic, or Gothic Tribes, were converted to Christianity, largely through the efforts of Bishop Ulfilas. Ulfilas invented the Gothic alphabet, and translated the Bible into the Gothic Language.