Starting in 975 AD, there were efforts to get warriors to pledge that they would not fight on holy days (and about a quarter of the calendar was made up of holy days). These pledges were called the ___ of God.

Peace studies is an interdisciplinary academic field that draws on political science, sociology, history, anthropology, theology, psychology, philosophy, and other fields to:

understand the causes of armed conflict;
develop ways to prevent and resolve war, genocide, terrorism, gross violations of human rights; and
build peaceful and just systems and societies.