Silk Road
From 200 B.C.E. to 1450 C.E., there were many continuities and changes in patterns of interactions along the Silk Roads. A change that occurred was that the people adapted to overseas trade. This was due to the innovations of boats over time. Another change was the goods that were trade. This was due to the demand on materials in areas that they aren't found. A continuity was that the Silk Road remained as an important trade route. One change that occurred was that the people adapted to overseas trade. As time progressed, civilizations like some of the Chinese dynasties innovated new and better boats. The typical vessel used by the Chinese is the junk. It is an efficient design that is fast, easy to handle, and able to sail upwind. Its most distinguishing features are the sails that divide into a number of horizontal panels. These give the sail better aerodynamics and allow reducing the sail area for different wind conditions. These ships helped advance the trade in the Silk Road. Another change that occurred was the goods that were trade. This change happened because empires wanted materials from other empires. Around the time of the Han dynasty and the Roman Empire, the Romans wanted silk, so they created the Silk Road to trade with China. Over time, many more items were added to the list of goods that was traded. Some of these items that were added are ivory, jade, glass, spices, cloth, oil, weapons, gold, nuts, food, dyes, flowers, salt, onions, incense, pepper, furs, horses, tea. A continuity that occurred was that the Silk Road remained as a major trade route. All the way from the beginning of the Silk Road to the end of the Silk Road, the purpose of the route was to trade from the East side of Afro-Eurasia to the West side of Afro-Eurasia. Both areas have gained a lot from the route, in more ways than one. The main reason that these events occurred was again the demand for materials. When one region invents a new item or finds a new resource, other