How to view history of various commands in Emacs

Question

Commands entered after pressing M-x can be viewed using the up/down arrow keys.

How can I get a list of all the commands includ

Answer 1

For a complete list of history, type C-h l (lowercase "L").

Note: this list is complete in the sense that it keeps all events and commands that happened recently, but it's not complete in the sense that it only keeps track of the last 300 or so events (and corresponding commands).