Potassium is one of the major electrolytes (together with sodium, chloride and magnesium) that conducts electricity in the human body. It also plays important roles in muscle contraction, nerve impulse transmission, and in maintaining the balance of fluids in the body.
The first modern usage of the specific term social justice is typically attributed to Catholic thinkers from the 1840s, including the Jesuit Luigi Taparelli in CiviltÃ  Cattolica, based on the work of St. Thomas Aquinas.
Development of the Juvenile Justice System. The legal concept of juvenile status, like the concept of childhood itself, is relatively new. The juvenile court system was established in the United States about two hundred years ago, with the first court appearing in Illinois in 1899. Prior to that time, children and youth were seen as miniature adults and were tried and punished as adults.