Question

How did the rats create problem in the newly built area of hanoi

Answer 1

Thus what was installed to create a hygiene enviroment became a causeof the plague. The large sewers used in modern Hanoi became the ideal breeding ground for rats. The ratsmoved around the city without anyproblem. And rats began to enter the well-cared-for homes of French through the sewage pipes.

Answer 2

Rats dig holes when we are builting

areas of hanoi