It developed during the Protestant Reformation, being shaped theologically by John Calvin, but also other major Reformed theologians. It was founded in 1571. The Dutch Reformed Church was shaped by various theological developments and controversies during its history, including Arminianism, the Nadere Reformatie and a number of splits in the 19th century that greatly diversified Dutch Calvinism. The church functioned until 2004, the year it merged with the Reformed Churches in the Netherlands and the Evangelical Lutheran Church in the Kingdom of the Netherlands to form the Protestant Church in the Netherlands. At the time of the merger, the Church had 2 million members organised in 1,350 congregations. A minority of members of the church chose not to participate in the merger and instead formed the Restored Reformed Church.