Complex sentence: Finland and Sweden have long traditions in crisp bread consumption and crisp bread has been known in most households since the 1800s.Breads were cooked and dried just twice a year; following harvest and again in the spring when frozen river waters began to flow.
Split into simpler sentences: Finland and Sweden have long traditions in crisp bread consumption and crisp bread has been known in most households since the 1800s. Traditionally, crispbreads were baked and just twice a year; following harvest and again in the spring when frozen river waters began to flow.