 In negotiations for a treaty some 'trading' of territories was involved in northeast Congo, Sudan and Uganda.There was also the question of how far east into the Bangweulu swamps and floodplain the Pedicle should extend.The King of Italy was called in to adjudicate and he drew a north-south line (a line of longitude) through a point on the map where the Luapula was thought to exit from the Lake Bangweulu swamps, and finally the Pedicle was born