Sea lamprey found in the northern and western Atlantic Ocean along the shores of Europe and North America, in the western Mediterranean Sea, the Black Sea, and in the shores of the Great Lakes. They have been found at depths to 4000 m and tolerate temperatures between 1.0 and 20 °C. The largest European populations of sea lampreys are located throughout the south-western areas of Europe (north-central Portugal, north-northwest of Spain, and west–south-west of France). These countries also support the main fisheries of the species. Sea lampreys are anadromous. From their lake or sea habitats, they migrate up rivers to spawn (followed
Technology, Tradition, and the State in Africa the two continents. In particular he criticises the idea that African political systems were ever feudal, believing that such a concept – while applicable to Medieval Europe – was not applicable to pre-colonial Africa. In the first chapter, entitled "Feudalism in Africa?", Goody explores the various definitions of the word "feudalism", and the manner in which it has been used to describe historical societies across both Europe and Asia, and also the manner in which social anthropologists have used it to refer to contemporary societies in Africa. He proceeds to discuss the various definitions of feudalism, and the way in