Is it easier to have aliens of similar races on your planet?
When conquering/integrating an alien race of the same species, are there any effects that are added/negated?
Example:
I have a human empire, I conquer their single planet and start adding their pop and my pop to the same planets. Because they are both human/mammalian are any effects that would improve their happiness or help them integrate without rebellion?
In comparison conquering a planet of fungi and adding them in the same way, would there be any problems due to their separation in species.
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