They just did .............
The correct word is "precedent"
Many of George Washington's customs that he set while President became the precedent by which other Presidents acted.
The most famous was, until FDR, the two term limit for Presidents.
After FDR, two terms would be codified.
I suggest the Founding fathers, but its really your choice to have fun with it.
The smallest country in the world is the Vatican, also known as the Holy See.
As a separate royal colony
