Why should we use a markup language to create basic web pages to be interpreted by the web browser?

Markup languages are the brick and mortar of the Web-where it all started, when websites were just static pages with text and some formatting. Originating from typesetting processes used in early printing presses, these languages have long been used to annotate the text of a site, dictating both the architecture of a site and the display of text. While markup languages are a part of the past, that hasn't made them obsolete. In fact, they've remained a core of development and its future as well.

Everything you see on the Web is a combination of markup (text), CSS (design) and front-end scripts (interactivity), and that markup is what creates a site's foundation. HTML is the main markup for web pages, or just about anything displayed in a browser, which explains why it's still incredibly relevant, and why so many developers know it.