Complex sentence: Two special schools of sculpture deserve mention in the Baroque period: the art produced by Jesuits helped by Indians, flourishing in the Reductions, and the articulated pieces used in processions, the so-called statues "de roca".
Split into simpler sentences: Two special schools of sculpture deserve mention in the Baroque period. The art produced by Jesuits, helped by Indians, flourishing in the Reductions, and the articulated pieces used in processions, the so-called statues "de roca".