The programming language developed in 1995 that is widely used for web development and interactive content is JavaScript. JavaScript enables developers to create dynamic and interactive web pages, enhancing user engagement through features such as animations, form validations, and real-time updates. It is an essential component of modern web development, often used alongside HTML and CSS. With its versatility and extensive libraries/frameworks, like React and Node.js, JavaScript continues to be a dominant language in building applications for both front-end and back-end development.