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1 vote
Which technological application was a cheap and effective method of protecting trenches in WWI?

A)
air raids
B)
electric fences
09
barbed wire
D)
submarines

User Crwils
by
6.5k points

2 Answers

9 votes
C. Barbed wire would be correct
User Carolynne
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7.0k points
10 votes
The correct answer is Barbed Wire
User Kujiy
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7.3k points