French wanted to introduce infrastructural projects in Vietnam because :
(i) The objectives were to ensure regular supply of natural resources and other necessary goods.
(ii) The French took up the development to make more profits.
They were successful as :
(i) They began to build canals and draining lands in the Mekong Delta to increase cultivation.
(ii) They ensured transportation network-railroads to transport goods for trade, move military garrisons and control the entire region.