Flags (Government Properties)
Determines which flags are activated for the selected government type. The following flags may be activated:

Default type | All civilizations start the game under the selected government. Transition type | When changing governments (i.e., having a revolution), civilizations temporarily transition to the selected government.
Requires maintenance | Under the selected government, all city improvements costs must be paid for
Standard tile penalty | Under the selected government, no tile may generate more than 2 food and shields.
Standard trade bonus | Under the selected government, each tile generates an additional 1 to commerce.