Trench warfare began after Germany failed in its intitial plan to take Paris as quickly as possible. Because they ran in to a stalemate in which the British and French stopped the German surge, that was when both sides dug trenches and waited it out
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Da/Nu. Unlike all other Romance languages, Romanian has taken the word 'Da' from the surrounding Slavic peoples, one of the most significant influences that always seems to confuse people. Da means yes and Nu means no.