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I suppose it depends on what you mean as orthodoxy. If you mean the Eastern Orthodox Church, it has been around as long as the Roman Catholic Church. They officially split from each other in A.D.1054, when the bishops of Rome and Constantinople mutually excommunicated each other along with their followers.
Protestantism began with the German Reformation in the 1500s. There were two main branches: Evangelical Lutheranism, with Martin Luther and Philip Melanchthon as its leaders, and the Reformed Church, with John Calvin, Ulrich Zwingli, and John Knox leading it.
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