source: FotS encyclopedia
1. Coal
This enables construction of advanced railway buildings
2. Copper
This enables construction of advanced port buildings
3. Cotton
This enables construction of advanced industrial buildings
4. Iron
This enables construction of advanced port and speciality buildings
5. Machines
This enables construction of advanced speciality buildings
6. Silk
This enables construction of advanced industrial and speciality buildings
7. Tea
This enables construction of advanced business buildings