Automate Trade Routs

Hey,

Sorry for this simple question,
But I’m having a hard time creating the automated trade routes.
Could someone please explain to me how to create them.

Also, let’s say I always want to go buy silver at a native village, is that possible to automate?
Thanks.

Use governor (one of the 3 buttons in the city screen near "Building in Progress picture") to set goods for import/export. Once you have a city exporting a good and another demanding the same, there is a (inactive) trade route.
You can then assign a Wagon to that route. (Unit will have a ction button for this)

Also, no.