The term 'Sections of History' can be broken down into four letter sections, or 'ERAS'. ERAS are periods of time in history that are defined by certain characteristics, such as the political, social, and economic conditions of the time. For example, the Middle Ages is an era that is characterized by feudalism, the Renaissance is an era that is characterized by a revival of classical art and literature, and the Industrial Revolution is an era that is characterized by the introduction of new technologies. Each era has its own unique set of events and developments that shape the course of history.