It was also on the Imperial Highway constructed between northern and southern China. Northern and eastern Salem are less hilly. Palau became divided into northern and southern federations. There may be a slight decrease in numbers in eastern, northern, and western Africa. The lake is surrounded by hills on the northern and western sides. Lagan on the east coast of Northern Ireland. The YPG is active in Northern and Eastern Syria. There was sustained urbanization in northern and western Europe. It encompasses much of northern and western Houston. In northern and western Sweden there are also dialects with . The tribes argued over approximately of land in northern Arizona. Burlington is the media center of northern and central Vermont. Denmark became part of a Lutheran heartland extending through Scandinavia and northern Germany. Contact was limited to skirmishes on the border of northern Persia. Nunavut covers of land and of water in Northern Canada.