Either the trench(it was after all trench warfare) the first tanks, or the airplane,all were used in the war, and it was the first time any were used, including long range artillery, and flamethrowers<span />
<span>increased politicial influence in the north
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Answer:
Eastern parts were richer and more populated, while western part had a symbolic value (Rome). All in all, western half collapsed quickly and doesn't have great impact on history. Eastern half is the Byzantine empire, which had a great impact on eastern Europe, it basically "created" Bulgarian, Serbian and Russian empires (of which only Russian managed to survive long enough to become a world force) and (Byzantine ) had a great influence on Ottoman empire.
hope this helps ;)
Explanation: