The Different Shells Available In Emacs

Emacs can be overwhelming to the new user. There is so much stuff inside Emacs. Take the various shells and terminal emulators inside Emacs. Why are there so many? What's the differences between them?

REFERENCED:
► https://www.masteringemacs.org/article/running-shells-in-emacs-overview - An Overview of Emacs' Shells

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FREE AND OPEN SOURCE SOFTWARE THAT I USE:
🌐 Brave Browser - https://brave.com/dis872
📽️ Open Broadcaster Software: https://obsproject.com/
🎬 Kdenlive: https://kdenlive.org
🎨 GIMP: https://www.gimp.org/
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🗒️ Doom Emacs: https://github.com/hlissner/doom-emacs

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