Nutritional yeast can be classified into fortified and unfortified. That implies that Caesar likely counted some unfortified settlements as oppida. Like other nomadic groups, they lived primarily in unfortified encampments. B Ages sites like Jerusalem were small and relatively insignificant and unfortified towns. Port wine is typically richer, sweeter, heavier, and higher in alcohol content than unfortified wines. Most settlements are open and unfortified; some forts are also known. The Umayyads built new cities, often unfortified military camps that provided bases for further conquests. The settlements were unfortified, with dense rows of willow-and-mud houses. The earliest examples of Madeira were unfortified and had the habit of spoiling at sea. In the 1680s around Sumy started to form unfortified suburbs. These habitats were unfortified, with dense rows of willows and mud houses. Following the fall of Rome, the practice of building unfortified villas ceased. Delayed construction left these largely unfortified by the outbreak of the First World War. An earlier view saw the Linear Pottery culture as living a "peaceful, unfortified lifestyle". It was also an unfortified part of the Allied line.