The Empire Map produces different resources you can collect from different locations using your Foragers. To send your Foragers, first, make sure you have researched Foragers, placed the Foragers Compound and hired a Forager to use. Next, go to the Empire map and click on the location you want to collect resources from. (This will either be a resource Town or Village). Click the dispatch button to send your Foragers on their way.

Note: You can only dispatch to locations that are either neutral or belong to the same house as your city. You can tell the ownership of locations by what colour they appear on the Empire Map.