Explain any three steps taken by French to solve the problem of plague in Vietnam.


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Steps taken by the French to solve the problem of plague in Vietnam were as follows :
(i) French hired Vietnam workers and paid for each rat they caught.
(ii) Money was paid when tail of a rat was given as proof.
(iii) Some raised rats to earn money as tails were clipped and rats released so that the process of earning continued.

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