Building output is based on the nation's loyalty. If the nation has a loyalty of 50, then each production building will produce only 50% of its normal production. To achieve max output, the loyalty of the nation must be at 100.

You can increase a nation's loyalty by executing the domestic order named Give Supplies. By giving resources to the nation's population, the loyalty will rise. The closer the loyalty gets to 100, the more resources will need to be given.

Loyalty decreases for all nations over time and players will need to keep giving supplies to keep the loyalty at 100.

The formula for building output when utilizing nation loyalty is this:

tech_effect is based on the technology that increases the effect of loyalty on building output. This starts at zero (0)

div = 100 - tech_effect

true_output = calulated_output x ( loyalty / div )

An example of this is this: Say the building is normal putting out 100 wood each hour, the nation has a loyalty score of 70 and the empire has no technology. The formula will look like this:

true_output = 100 x ( 70 / 100 )

The result will be a building output of 70 wood per hour.

Now we can assume the empire has purchased some technology to increase the effect of loyalty on building output by +3 points with no other changes. The formula will look like this:

true_output = 100 x ( 70 / 97 )

The result will be a building output of 72 wood per hour.

Loyalty affects all production buildings the same, and gaining a technology that affects how loyalty affects building output will affect the entire empire.

Loyalty for each nation will decrease each day by an amount equal to your empire level. If a nation’s loyalty is less than 20, it will begin to flash as a warning that your loyalty is very low. If the loyalty of a nation reaches zero, the nation will be lost and the occupied tile will return to a forest tile.