GalCiv II : Gold campaign problem

I started the dread lords campaign with the humans, but can never research trade. It's not even on the tech tree, but when I start a "new game" skirmish with the exact same setup, I can research trade. Anyone have a fix or know the reason for this? It's almost impossible to have 2 planets only and keep a green economy without any trade.
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Reply #1 Top
AFAIK not all techs are available in the campaign. As you progress through the mission, you can research farther up the tech tree.
Reply #2 Top
The tech tree is intentionally limited during most of the campaign.