The internal energy and temperature of a system decrease (E E. The System and Work. The system is usually defined as the chemical reaction and the boundary is the container in which the reaction is run. In the course of the reaction, heat is either given off or absorbed by the system.
The Middle Ages began in the year 476 A.D. and ended around 1300 with the beginning of the Renaissance. The Middle Ages, also called the Medieval Period, began just after the fall of Rome and it dominated the European continent through the early 14th century. The Middle Ages filled a time period between the ending of a great reign and the beginning of a new era characterized by revitalization and cultural growth.
Answer: The Dark Ages are commonly considered to be the early part of the period known as the Middle Ages. Often the term Dark Ages refers to the initial five hundred years following the fall of Rome in 476. It is thought of as beginning around A.D. 450 and continuing till A.D. 1000.