Since the world in its entirety cannot be grasped through direct experience, world maps are mental constructs that serve as a radiography of a given culture’s attitudes towards its environment. Early modern Japan offers an intriguing study case for the assimilation of a variety of world map typologies in terms of pre-existing traditions of thought. Rather than topography, these maps stress topological connections between “myriad countries” and therefore embody the various mental maps of cultural agents in Japan. The maps’ materiality and embeddedness in social networks reveal connections to other areas of visual and intellectual culture of the period.
The Indian Ocean and its adjoining seas, from the Middle East and East Africa to Southeast Asia, have been witness to the nautical ventures of most, if not all, major sea powers of world history. Progress in nautical archaeology in the past few decades has brought about a much better understanding of shipbuilding traditions of the Indian Ocean, until then limited to textual and ethnographic sources. Only a few shipwreck sites and terrestrial sites with ship remains have been studied so far along the shores of the Red Sea, the Persian Gulf, or the Indian Ocean proper. Many more were found in recent excavations in the Southeast Asian seas, which were built along Southeast Asian or Indian Ocean shipbuilding traditions.
Two main technical traditions can now be clearly identified for pre-modern times: the Arabo-Indian sewn-plank ships of the western Indian Ocean, which survived into our times, and the Southeast Asian vessels that evolved from a distinctive sewn-plank technology to fully doweled assemblages, as could still be observed in Indonesian vessels of the late 20th century.
The still limited number of shipwrecks brought to light in the Indian Ocean as well as the considerable imbalance in archaeological research between the Indian Ocean proper and the Southeast Asian seas have hindered the advancement of the discipline. Considerable difficulties and interpretation problems have moreover been generated by biased commercial excavations and subsequent incomplete excavation records, not to speak of the ethical problems raised in the process. Such deficiencies still prevent solid conclusions being drawn on the development of regional shipbuilding traditions, and on the historical role of the ships and people who sailed along the essential Indian Ocean maritime networks.
At the turn of Bronze and Early Iron Ages, the nomads of the Eurasian steppe brought about a new and progressive phenomenon in world military history: cavalry warfare. Spanning the vast distance from the Danube in the West to the Hwang Ho in the Far East, among nomadic peoples including the Cimmerians, Scythians, Sakas, Sarmatians, Xiongnu, and Xianbei, a universal mode of warfare, more or less similar in tactics, battle, arms and armor, and horse harness, dominated.
The chronological frames of the Early Iron Age are differently determined in various historiographical traditions, but for the history of steppe Eurasia the frame is customarily considered to begin in the 10th century
The light-armed cavalry was a basic military force of the nomads. Each nomadic man was an armed and skillful warrior. Judging from archaeological material and narrative sources, the nomadic light cavalryman was armed by bow and arrows, light javelin and/or lance, and probably lasso. The light cavalry consisted of the common nomads. Since the 7th c.
The tactical principles and fighting methods of nomads were conditioned by the composition of their army, with light cavalry prevailing. One of the main methods was raids, which varied in duration, range, and composition of personnel involved. The battle tactics of nomadic troops developed due to a need to overcome a resistance of deep infantry formation. Since the long spears of infantry inhibited close combat, nomadic horsemen first covered the adversary with a massive and dense, although undirected, torrent of arrows. After that, light horsemen approached and threw spears and javelins from shorter distances, thus causing confusion in the ranks of the infantry. Then heavy cavalry rushed into the breach for fighting with close-combat weapons, spears, and battleaxes.