Sequence becomes visible when events are placed along a line. A timeline is a graphical or textual representation of events in chronological order, used to clarify relationships of precedence, duration, and simultaneity.

Timelines appear in textbooks, museums, and digital interfaces. They may cover centuries or hours, global processes or individual lives. Design choices—scale, selection of events, annotations—shape the story the timeline tells. Parallel timelines can compare developments in different regions.

As a tool, the timeline disciplines narrative and exposes gaps or compressions in knowledge. It is not itself an argument, yet it supports argument by making temporal structure explicit. Good timelines balance clarity with honesty about uncertainty in dating.

• Visual or textual sequence of events in time
• Clarifies order and duration
• Used in teaching and research presentation
• Selection and scale shape interpretation