Historical eras are distinct periods in history that are characterized by specific events, cultural developments, or significant changes in society. For example, the Renaissance marked a time of renewed interest in art and science, while the Industrial Revolution transformed economies and lifestyles through technological advancements. Each era helps us understand how societies evolved over time. These eras are often defined by major milestones, such as wars, discoveries, or influential figures. The Middle Ages, for instance, was shaped by feudalism and the rise of the Catholic Church, while the Modern Era has seen rapid globalization and technological innovation. Studying these periods allows us to learn from the past and appreciate the complexities of human history.