In the fast global scenario of web development, knowhow of tech stacks is essential for the web developers. Among these, the MERN Stack- MongoDB, Expres.js, React.js, and the node.js stands for its applicability and web development applications. Mern stack contains the following – • MongoDB- It is very popular NoSQL database known for its comprehensive and flexible usage. • Express.js-It is a Node.js web application framework used for web and mobile...