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It is a programming languageused to create engaging elements in web developments, games building, and fully featured web applications.
It solves the problem of version control, streamlined workflow and effective collaboration
You create an independent and complete copy of it in your own account
It creates a complete copy of it on your conmputer, giving you local access, so you can edit it and contribute to it offline.
It is a way to propose changes to a code base, and acts as a collaboration hub for reviewing and approving a code before it is accepted on a project.