While the Nicene Creed was approved by the entire church in 325 divisions developed when the filoque was added for unknown reasons in 38+AD and the Orthodox withdrew their support. I refer you to the article reference I posted in #73 published by the North American Orthodox-Catholic Theological Consultation group.
If I appear "foolish" at least I'll have company of the North American Orthodox-Catholic Theological Consultation group since we both must be in error.
Against these challenges, the fathers at the Council of Constantinople (381) affirmed the faith of Nicaea, and produced an expanded Creed, based on the Nicene but also adding significantly to it.HarleyD, you're misreading something here. The Orthodox never withdrew their support as a result of anything that occured at one of the Seven Councils. Please note that the Creed as quoted in your referenced article states that the Holy Spirit proceeds only from the Father. The filioque would not come up as an issue for several centuries afterwards.Of particular note was this Creed’s more extensive affirmation regarding the Holy Spirit, a passage clearly influenced by Basil of Caesaraea’s classic treatise On the Holy Spirit, which had probably been finished some six years earlier. The Creed of Constantinople affirmed the faith of the Church in the divinity of the Spirit by saying: "and in the Holy Spirit, the Lord, the Giver of life, who proceeds (ekporeuetai) from the Father, who with the Father and the Son is worshipped and glorified, who has spoken through the prophets."