What is one of the main uses of the div tag?

The div tag is primarily used to create structural groupings of content within a webpage. It serves as a container for various elements and allows developers to organize sections of the HTML document logically. By using the div tag, you can apply CSS styles, manipulate layouts, and facilitate scripting. This grouping capability is essential for managing complex web designs, as it helps in separating different parts of a webpage for better readability and maintainability.

While other tags exist for specific purposes, such as presenting inline text, defining links, or indicating footer content, the div tag's primary role is aimed at structuring content, making it a fundamental tool in web development. Therefore, its versatility in grouping content is a key reason why it is widely used in HTML.