Clothing for the population

Interesting extra tech tree:
Add cotton to farming
Add synthetic fibers to chemical plant
Maybe even cow/pigs for leather (and food)
Various industrial buildings and research to support the production chain
More happiness/health for population when well clothed etc
Some fabrics could be used for bandages as part of medical kits
Could play into a more various climate on harder modes - cold weather needs better clothing for eg

A thought on production chains:
Cotton, harvest as raw cotton, add a textile mill to turn it into fibers etc
Synthetic fiber maybe 2 stages inspired by how nylon as made:
Stage 1 - create a polymer crystal (equiv to nylon 'salt' stage' via acid + amonia + fuel gas (polymerization plant)
Stage 2 - polymer crystals + steam -> fibers and can be sent to textile mill for use (nto sure which building - maybe modern textile mills do this these days?)
As well as cotton, perhaps cellulose could be a bi-product of some food processing and could be processed into fibers for cloth/clothing

Having to go through a cotton gins to get the seeds and foreign material out.
Tanners for leather
Leather for shoes
The developer would have to add buildings for this.

Fibres might also find aplications in eletronics and household goods.