Easy question: Who needs roads to which location in Anno 1404?
Here is what I know:
Warehouses need roads to grab the finished goods from the industries.
People houses need roads for the sake of having them: If people have no roads the "can't" reach the marketplace (for companionship). But when having roads, they walk across the grassland to the market instead of using the roads they demanded.
What other buildings need roads to function at all and where must the roads lead to?
For example: Is there any benefit if each building is connected to a single road network so that theoretically each building can be reached by road from any starting point?