What does ESTABLISH mean?

verb

1. set up or found“She set up a literacy program”
2. set up or lay the groundwork for“establish a new department”
3. establish the validity of something, as by an example, explanation or experiment“The experiment demonstrated the instability of the compound”
4. institute, enact, or establish“make laws”
5. bring about“The trompe l'oeil-illusion establishes depth”
6. place“Her manager had set her up at the Ritz”
7. build or establish something abstract“build a reputation”
8. use as a basis for; found on“base a claim on some observation”