Complex sentence: Nevertheless, in Northern Europe, they were used as a substitute in the production of paper, pillows, candle wicks, and wound-dressings; and the indigenous peoples of North America use the plant in cooking and treatment of digestion problems.
Split into simpler sentences: Nevertheless, in Northern Europe, they were used as a substitute in the production of paper, pillows, candle wicks, and wound-dressings. The indigenous peoples of North America use the plant in cooking and treatment of digestion problems.