Complex sentence: Written as a frontier story about the gold rush, the "The Call of the Wild" was meant for the pulp market and first published in four installments in "The Saturday Evening Post", who bought it for $750 in 1903.
Split into simpler sentences: Written as a frontier story about the gold rush, the "The Call of the Wild" was meant for the pulp market. It was first published in four installments in "The Saturday Evening Post", who bought it for $750 in 1903.