On page 43 of the game manual, it says Starbase modules stack with each other and that it is recommended to build multiple starbases in the same area...
So say Starbase A = Influence +20% and another Starbase B = influence +10%, and say a competing race's colony was in the middle of both A & B's coverage..... would that mean the total influence would be +30%?
And would it be possible to exceed 100%?