Original sentence: Saalfeld is a key town in the best selling alternate history stories in Eric Flint's 1632 series, in which a small American town of 3,000 co-protagonists is suddenly transported across time and space into the Thirty Years' War, which ravaged the countryside and nearly depopulated  central Germany
Edited sentence: Saalfeld is a key town in the alternate history stories in Eric Flint's 1632 series, in which a small American town of 3,000 co-protagonists is suddenly transported across time and space into the Thirty Years' War, which ravaged the countryside and nearly depopulated central Germany