How do I keep the browsing history accessible after quitting Firefox?

Accessible where? On the single Fx installs or do you use sync. Browser history is controlled via Settings/Preferences, just search for history there

Hello What information is stored in my profile? https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data#w_what-information-is-stored-in-my-profile https://support.mozilla.org/en-US/questions/1521409 https://letos.org https://github.com/pawelsalawa/letos/releases