A more thorough explanation:

Forum Seculare is a term used in history to refer to a secular court. It was a place where legal disputes were settled outside of religious institutions.

For example, during the Middle Ages, the Church had a lot of power and influence over people's lives. However, if someone had a legal dispute that didn't involve the Church, they could go to a Forum Seculare to have it resolved.

These courts were important because they allowed people to seek justice without having to rely on the Church. They were also a way to keep the Church from having too much power over people's lives.