Building unique to America. +1 Wildcard Policy Slot. +3 Dipolomatic Victory Point. +50% Influence points. +1 Diplomatic visibility towards all civilizations. Accumulates 2 extra Alliance Points per turn. Double bonus of Trade Routes from alliances. If you are the suzerain of at least 1 City States of the same type, all of your cities receive +10% of the respective yield.Your Spy level is increased by 3 for all offensive operations,enemy Spy level reduced by 3 in your lands