Felix Christian Klein (April 25, 1849, Düsseldorf, (then) Prussian Empire - June 22, 1925, Göttingen, Germany) was a German mathematician.

During the Kulturkampf, the monastery and the church were closed down; however, they were opened again once the Prussian Empire resumed normal relations with the Roman Catholic Church.

In 1875, at the height of the Kulturkampf, the Congregations Law was enacted, effectively forbidding Roman Catholic religious orders to operate within the Prussian Empire.

Only the foundation of the Prussian German Empire in 1871 allowed for further standardization.

In the time of the Partitions, Leśno, like all of the surrounding region, became part of the Prussian Empire.

Born in 1862 in London, he was the son of one of the most powerful politicians in the Prussian Empire.

Blees was born in 1860 in Aix-la-Chapelle, (Germany(, then a part of the Prussian Empire.

Markov fled to Russia where he sold the technology to other nations, such as Tesla directed energy weapons to the Prussian Empire, and helped modernize the Tsar's armies.

By the late 1840s he was convinced that Russia would conquer Constantinople and the Balkans, and perhaps further the Slavic lands of the Habsburg and Prussian Empires.

Berlin is actually in the middle of the Federal State of Brandenburg, which was once the heart of the Prussian Empire.