First Council of Nicaea: when Christianity was deformed and Jesus named son of God.

[Angrboda]

He produced "a trinity".

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Read history better, please.

According to Eusebius's work, The Life of Constantine, the controversy had spread from Alexandria into almost all the African regions, and was considered a disturbance of the public order by the Roman Empire.

Wikipedia || Arian Controversy

While the developed doctrine of the Trinity is not explicit in the books that constitute the New Testament, it was first formulated as early Christians attempted to understand the relationship between Jesus and God in their scriptural documents and prior traditions.

An early Trinitarian formula appears towards the end of the first century, where Clement of Rome rhetorically asks in his epistle as to why corruption exists among some in the Christian community; "Do we not have one God, and one Christ, and one gracious Spirit that has been poured out upon us, and one calling in Christ?" (1 Clement 46:6). Around the turn of the first century, the Didache directs Christians to "baptize in the name of the Father and of the Son and of the Holy Spirit." Ignatius of Antioch provides early support for the Trinity around 110, exhorting obedience to "Christ, and to the Father, and to the Spirit".

The pseudonymous Ascension of Isaiah, written sometime between the end of the first century and the beginning of the third century, possesses a "proto-trinitarian" view, such as in its narrative of how the inhabitants of the sixth heaven sing praises to "the primal Father and his Beloved Christ, and the Holy Spirit". Justin Martyr (AD 100–c. 165) also writes, "in the name of God, the Father and Lord of the universe, and of our Saviour Jesus Christ, and of the Holy Spirit".

Justin Martyr is the first to use much of the terminology that would later become widespread in codified Trinitarian theology. For example, he describes that the Son and Father are the same "being" (ousia) and yet are also distinct faces (prosopa), anticipating the three persons (hypostases) that come with Tertullian and later authors. Justin describes how Jesus, the Son, is distinguishable from the Father but also derives from the Father, using the analogy of a fire (representing the Son) that is lit from its source, a torch (representing the Father). At another point, Justin Marty wrote that "we worship him [Jesus Christ] with reason, since we have learned that he is the Son of the living God himself, and believe him to be in second place and the prophetic Spirit in the third" (1 Apology 13, cf. ch. 60).

The first of the early Church Fathers to be recorded using the word "Trinity" was Theophilus of Antioch writing in the late 2nd century.

Wikipedia || Trinity