Advance

The Western Shore

cel_western_shore

For millennia we have fished, traded, and fought along the wild Atlantic coasts. From these harsh waters, we have learned seamanship unmatched by any rival.

Potential

Is or was

Celtica

Exact conditions

Advance tree

It has no requires, so the game files don’t say where this goes. When the game builds the Renaissance tree, it adds this at the end of a branch with room for it, in the same spot in every campaign.