A historical timeline section is a visual representation of events that have occurred in chronological order. It is often used to illustrate the progression of a particular topic or to provide context for a specific event. The term 'ERA' is used to refer to a period of time, usually lasting several years, during which certain events occurred. An ERA can be divided into smaller sections, such as decades or centuries, and each section can be further divided into years, months, and days. A historical timeline section can help to provide a better understanding of the past and how it has shaped the present.