Marsh Drainage
A system of drainage ditches and fillings to make the fertile marsh for suitable for agricultural activity.
Requires
- Blacksmith
- Carpenter
- 20000 heures de travail
- 1000 wood
- 150 metal
- 100 goods
- 600 minimum population to construct
- Full efficiency requires 1200+ population
- Can only be built on marshes.
Required for
Provides
- wood Production bonus
- food Production bonus
