How did Spain react to the Protestant Reformation?

Spain reacted to the Protestant Reformation with strong opposition, reinforcing its commitment to Catholicism. The Spanish monarchy, particularly under King Ferdinand and Queen Isabella, supported the Inquisition to root out heresy and maintain religious uniformity. Additionally, Spain played a key role in the Counter-Reformation, promoting Catholic doctrine through the Jesuits and other religious orders. The government also implemented censorship and restrictions on Protestant literature to curb the spread of Reformation ideas.