Where are default aliases defined

I’ve got a fresh install of CentOS 8 (minimal ISO). I notice that, despite none being listed in either .bashrc or .bash_profile, a bunch of aliases are defined by default in bash. For example,

alias cp='cp -i'
alias egrep='egrep --color=auto'

Many of these aliases I’d like to keep. However, where can I find/edit the sources of those definitions?

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Author: Daniel Walker