What does entrenched mean?

Unable to change a person's thought or way of thinking.

Explanation:

Depends on the context.

In warfare?

There are soldiers taking up a fortified position in which soldiers are awaiting the enemy to advance so they can mow them down. It is usually a term used in warfare.

In arguments?

Yeah. They're not gonna change their view. Good luck trying.

All in all hope this helps

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)