CESN says:
I was also wondering if it is assumed we have the facilities and trained people to combine the basic resources or if it is part of the development "move" to say: let's invest in industry and get some Gunpowder factories running!
It can be both! You have one workforce per province. That means if you have three provinces and three workforces, you can produce three available resources. For instance, you have the following resources available:
- Chemicals
- Cloth
- Cloth
- Gunpowder
- Metal
- Wood
You want to make ships. You can do that, because two cloth give you woven cloth, and woven cloth and wood give you ships. But, say you want to arm those ships. You can't just remove your workforces from what they're making, because then your ships disappear. The chain has to stay active as long as you want ships (think upkeep and repair). What do you do?
You expand, OR you develop provinces. A developed province is split in two, and you've got two workforces there now. Do that a few times and you've got three new workforces. Now you can take that gunpower, metal, and chemicals, and make cannons, and attach those to your ships. But to expand or develop, you need that RP post, and that's where you say, 'alright, we've got these factories now!'
One last thing. That's six resources, right? It's going to take a while to get that. Does that mean you just don't have ships until then? No. Your resources are supplies so sizable that they can affect your ENTIRE nation. If your nation has a merchant marine or just everyone and their pet squid owns a boat, that's perfectly cool. You're just not going to be able to use the ships for the use listed on the resource; in other words, you're not going to be able to transport military across the water. Until you build those ships.