A timeline is a visual representation that displays a sequence of events in chronological order. It helps to organize information, making it easier to understand the relationships between different events over time. Timelines can be used in various fields, such as history, project management, and education, to illustrate important milestones and developments. Timelines can be linear, showing events along a straight line, or they can be more complex, incorporating multiple lines or branches. They often include dates, descriptions, and images to provide context. For example, a timeline of World War II might highlight key battles, treaties, and political changes that occurred between 1939 and 1945.