On the Water: The Land Route to Orient

Northwest Passage - Wikipedia

History of transportation on the Silk Road – Sama Morvarid Asia International Transport

Water, Free Full-Text

Ancient roads, Article about ancient trade routes - Odyssey Travelelr

Northwest Passage, Definition, History & Explorers - Lesson

Here's the history and mystery of the Northwest Passage - Spectacular NWT

Nomadic ecology shaped the highland geography of Asia's Silk Roads

Northwest Passage - Canadian Arctic

Portuguese Explorers History of Western Civilization II