Medieval this societal structure was a strict hierarchy established by overarching power dynamics. At the peak stood the lord, wielding untouchable authority over his lands. Beneath him, a descending chain of vassals swore fealty and provided military support in exchange for protection. Each tier held its own level, constrained by a strict code of

individuals experience people from distant far more usually in industrial relationships than in every other, Nevertheless they Trade over merchandise. The Canadian-American historian William H. McNeill (1917–2016), an eminent world historian, saw these exchanges as being the central motif of world history. Technological facts is generally covete