Patric on transportation:
On resources and factories:
There is only one type of transportation and it starts with roads and horse carts. It can be improved to several levels of Railroad.
On resources and factories:
Resources and goods are allocated to factories automatically from the national resource pool. If you lack something you either have to buy it on the market or manufacture it (if possible).
Overseas resources must be brought home via sea transport (convoys).
Btw, Factories are built at the state level