(a) Only one-third of the students in Vietnam would pass the school-leaving examinations because the French colonial administration followed a deliberate policy of failing students in their final year examinations so that they could not qualify for better-paid jobs. Only the wealthy Vietnamese could afford enrolment in these expensive schools, and to add to that, very few would pass the school-leaving examinations.
(b) The French began building canals and draining lands in the Mekong delta for
increased cultivation. This was done under a garb to "civilise"
Vietnam on a European model, but it was actually an economic idea meant to
increase rice production and subsequent export of rice to the international
market.
(c) When the French principal of the Saigon Native Girls School expelled the
students protesting another student's expulsion, there was widespread
remonstration. Considering the gravity of the situation, the government decided
to control the intensity of the protests by providing an outlet-making the
school take back the students.
(d) Rats were most common in the modern, newly built areas of Hanoi because the
modern and apparently hygienic sewage system provided ideal breeding grounds
for rodents apart from being a good transport system as well, for the rats.
Sewage from the old city was drained out into the river or overflowed in the
streets during heavy rains. The large sewers now became a protected breeding
and living space for rats. Hanoi, despite its "modernity", became the
chief cause of the plague in 1903.