Question: Name the proposed state and kingdom conceived in the 19th century by a French lawyer and adventurer, whose modern day capital is Perquenco in southern Chile?
Sentence (from "Kingdom of Araucanía and Patagonia"): It was an unrecognized state that enjoyed only marginal sovereignty in a brief period of time, through alliances with some Mapuche lonkos, in a reduced area of Araucanía, in current Chile.
Relevant evidence: No