When was Poland occupied by Prussia?
Partitions of Poland
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With regard to population, in the First Partition, Poland lost over four to five million citizens (about a third of its population of 14million before the partitions).[11] Only about 4million people remained in Poland after the Second Partition which makes for a loss of another third of its original population, about a half of the remaining population.[12] By the Third Partition, Prussia ended up with about 23% of the Commonwealth's population, Austria with 32%, and Russia with 45%.[13]