Question

Ratwhere most common in the modern newly built areas of hanoi

Answer 1

when the french set about creating a modern Vietnam, they decided to rebuild Hanoi with modern engineering skills. the french part of Hanoi was beautiful and clean while the native quarter was not provided with any modern facilities. the filth from the old city drained straight into the river, which overflowed into the streets during heavy rain. thus what was installed to create a hygiene environment became the cause of a plague. the large sewers used in the modern Hanoi became the ideal breeding ground for rats . the rats moved around the city without any problem. and the rats began to enter the well-cared-for homes of french through the sewage pipes. this is how rats became common to find in the modern newly built areas of Hanoi.