How did the power of the church grow the Middle Ages and how did reformers work for changes?

During the Middle Ages, the power of the church grew significantly as it became a central authority in both spiritual and temporal matters, influencing kings and shaping societal norms. The church amassed wealth, built vast networks of monasteries, and established educational institutions, becoming a pivotal force in governance and culture. Reformers, such as Martin Luther and John Calvin in the 16th century, sought to address corruption and abuses within the church, advocating for a return to biblical principles and promoting ideas like salvation through faith alone. Their efforts led to the Protestant Reformation, which challenged the Catholic Church's authority and ultimately transformed the religious landscape of Europe.