贸易区

1066年的贸易区地图（黄色的丝路来自Horse Lords/ Jade Dragon DLC)

贸易区是由一连串被同一角色持有贸易站的省份组成,并为 直辖领收入和贸易站收入提供加成。 Trade zones scale super-linearly，因此最好有一个6省的贸易区，而不是两个3省的贸易区。 可以通过点击贸易区来看见该省属于哪一贵人家族的贸易区。 地图模式 (G)然后在按住Ctrl键的同时,点击共和国。

Contiguity（连续性）

For trade zone purposes, control of a sea province is determined by which family owns the most trade posts pointing into that sea province. If there is a tie, the sea zone is considered neutral: no family owns it, and no trade posts can be connected through it. If the sea zone is controlled by a family, all trade posts in adjoining land provinces are connected, regardless of port locations.

贸易价值

贸易区的价值是根据拥有贸易站之省份的收入和持有数得出的。贸易区的价值还会因为与共和国的首都相连结而获得可观加成。有些建筑物也会提高贸易价值。

收入加成

The trade zone bonus approaches +100% as the Trade Value approaches infinity.

贸易区中的城市和贸易站可根据其贸易价值（TV）获得一定比例的收入加成，注意这个加成在城市上减半。

贸易区加成 = (TV * 100) / (TV + 200)

Disease spread

With Reaper's Due DLC, trade zones can help spread epidemics. Wealthy rulers should consider fortifying their trade zone provinces with upgraded hospitals.

科技传播

科技会从贸易站单向传播到商业共和国首都。