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.
This important year (550) is what we consider to be the beginning of âthe Early Middle Agesâ and lasted until 1000. When you think about it, the Middle Ages were a very, very long period of time, and so itâs easier to break up these periods of time into the Early, High, and Late Middle Ages. But for now, letâs focus on what was happening during the Early Middle Ages.