The infrastructural projects developed by French colonisers in Vietnam: 1. A huge system of irrigation including canals, drains and earthworks were built in Mekong area to increase the rice production. 2. A trans-Indo-China rail network was built to facilitate transport of goods and military garrisons. It also helped in controlling the area. 3. The first link of rail network connected northern parts of Vietnam to Yunan in China. The second link connected Vietnam to Siam through Cambodian capital of Phnom Penh.