Question: What is the area of this region of Central Europe located mostly in Poland, in which Złotniki Lubańskie was formerly part of the historic Upper Lusatia region at its border?
Sentence (from "Muskau Park"): The park was laid out from 1815 onwards at the behest of Prince Hermann von Pückler-Muskau (1785–1871), centered on his Schloss Muskau residence.
Relevant evidence: No