Answer 1

MEAN is an acronym for MongoDB, ExpressJS, AngularJS and Node.js

MERN stack development is very similar where instead of AngularJS we use ReactJS.

In Full stack development the engineer has to handle all the work of databases, servers, systems engineering, and clients. Depending on the project, what customers need may be a mobile stack, a Web stack, or a native application stack.

Hope it helps 😁👍