In Arabia progress has been slower, although the surveys carried out by Colonel Wahab in connexion with the boundary determined in the Aden hinterland added more exact geographical Arabia.
In the East, the German Order, while enjoying Hanseatic privileges, frequently opposed the policy of the League abroad, and was only prevented by domestic troubles and its Hinterland enemies from playing its own hand in the Baltic. After the fall of the order in 1467, the towns of Prussia and Livland, especially Dantzig and Riga, pursued an exclusive trade policy even against their Hanseatic confederates.
Both French and British military expeditions had been sent against the Sofas - Moslem mercenaries who, under the chieftainship of Fulas or Mandingos like Samory, ravaged the hinterland both of Sierra Leone and French Guinea.
Another English company has constructed motor roads in the Liberian hinterland to connect centres of trade with the St Paul's river.
Turkey claimed the oasis as part of the hinterland of Tripoli and garrisoned Bilma in 1902.
Of martial disposition, the people often waged war with their neighbours, and also amongst themselves until the pacification of the hinterland by Germany at the beginning of the 10th century.
The Sierra Leone-Liberia frontier was demarcated in 1903; then followed the negotiations with France for the exact delimitation of the Ivory Coast-Liberia frontier, with the result that Liberia lost part of the hinterland she had claimed.
The systematic development of the colony, the opening up of the hinterland and the exploitation of its economic resources date from the appointment of Captain Binger as governor, a post he held for over three years.
From the hinterland comes mostly raw produce such as grain, drugs, wool, silk, ores and also carpets.
Among other famous explorers who helped to make known the hinterland was 'Colonel (then Captain) Marchand.