Final answer:
Pelagianism was a heresy that rejected the idea of original sin and the need for divine grace in achieving salvation. It had a significant impact on the idea of the Sacraments, undermining the importance of divine grace and emphasizing human effort.
Step-by-step explanation:
Pelagianism was a heresy that emerged in the 4th and 5th centuries, named after the British monk Pelagius. Pelagianism rejected the idea of original sin and the need for divine grace in achieving salvation. According to Pelagians, humans have the ability to choose good and achieve salvation without the help of God's grace.
This heresy had a significant impact on the idea of the Sacraments. The Sacraments, such as baptism and communion, are seen as channels of divine grace in the Catholic Church. However, the Pelagianism heresy undermined the importance of divine grace and emphasized human effort in achieving salvation. This challenged the belief in the efficacy of the Sacraments and their role in bestowing God's grace.