Complex sentence: The CNV started out as a moderate, Christian-democratic union, which was opposed to class struggle and workers'ownership of the means of production, and instead oriented itself towards a cooperation with the employers' organizations and a corporatist model of the economy.
Split into simpler sentences: The CNV started out as a moderate, Christian-democratic union, which was opposed to class struggle and workers'ownership of the means of production. Gradually, however, it oriented itself towards cooperation with the employers' organizations and a corporatist model of the economy.