Leer is a district in Lower Saxony, Germany. It is bounded by the city of Emden, the districts of Aurich, Wittmund, Friesland, Ammerland, Cloppenburg and Emsland, and by the Netherlands. In 1744, East Frisia was annexed by Prussia. In 1867, the region was subdivided into districts, and the districts of Leer and Weener were established. In 1932, thes…Leer is a district in Lower Saxony, Germany. It is bounded by the city of Emden, the districts of Aurich, Wittmund, Friesland, Ammerland, Cloppenburg and Emsland, and by the Netherlands. In 1744, East Frisia was annexed by Prussia. In 1867, the region was subdivided into districts, and the districts of Leer and Weener were established. In 1932, these two districts were merged.