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.