Your country is still rural and undeveloped. While the people may be surviving by living off the land, they are not producing anything that could be used by large scale industry, nor are they producing enough food to feed the industrial work force in your capital.
To get terrain tiles to produce useful quantities, you must develop them with the Builder. When a Builder develops a tile, a small structure appears. You will see that the tiles adjacent to your capital city are already developed.
When you close this window, a smaller window will appear. At the top it provides feedback on your last action. The lower text helps prompt your next action.
