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Uniting Europe would thus always be difficult for an army. A lot of smaller areas of Europe are easily defendable against an invading army. This further led to the development of Feudalism in Europe and frequent wars. This caused Europe to be dotted with strong castles.因而，统一欧洲关于一支军队来说永远是艰难的。欧洲许多较小的地域很容易抵御入侵的军队。这进一 ... [查看原文]
