Total War - Shogun:

: You must own a province that has the "Artisans" resource (e.g., Echizen or Kozuke ). Build the Artisan Chain : Construct the base Artisans building (1,350 koku).

: Doubles the amount of trade goods provided and significantly increases commerce wealth. Shogun: Total War

: While Fletchers are better for bow units, some players use the accuracy bonus from Paper Mill upgrades to buff Matchlock (gun) units later in the game. : You must own a province that has

In Total War: Shogun 2 , Paper Mills are a specific building upgrade path for provinces with the specialty resource. : While Fletchers are better for bow units,

: For the Ikko-Ikki clan, upgrading the Artisan in Echizen to Paper Mills is a standard opening move to secure early profit.

Upgrade to (or the alternative, Fletchers, which focuses on bow accuracy). Benefits :

For a deeper look at managing province specializations and buildings like Paper Mills, check out this overview of the strategy mechanics: