establish

transitive verb | es·tab·lish

1. : to institute (as a law) permanently by enactment or agreement we the people of the United States…do ordain and establish this Constitution —U.S. Constitution preamble

2. : to make firm or stable

3. : to bring into existence : found Congress shall have power…to establish post offices and post roads —U.S. Constitution art. I specifically : to found (a national bank) pursuant to a charter : to found (a national bank) pursuant to a charter

4. : to make (a church) a national or state institution — see also establishment, establishment clause

5. : to put beyond doubt : prove

6. : to place in a position of being accepted or followed a rule established by case law