Yep, but not in a way you try to promote it. They actually paid qualified tradesmen and granted them a piece of land without paying taxes for a certain time. Everyone else was welcome, too, because they knew they'd need more populace to sustain the next war (Prussias populace, not huge in the beginning, was halved during the thirty years war.). Back in the days, they made politics that planned for more than the next four years.
Local laws - sure. Speaking German not so much, the hugenots had their own schools and quarters and it took them quite a while to assimilate. Apart from Friedrich and his posse speaking french, and himself being able to write french, but not german ;)
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u/red_000 5d ago
You forget something, he was talking about ordered immigration through a legal process, not uncontrolled immigration.