What objectives did the British intend to achieve

What objectives did the British intend to achieve through their policies of infrastructure
development in India?

Under the British rule, basic infrastructure such as railways, ports, water-transport, postage and telegraph developed, but the objective behind the development of infrastructure was not to provide basic amenities to the people but to cater to their colonial interests.
The objectives of the Britishers behind the development of infrastructure were
(i) Roads were developed for the purpose of mobilising armies and transporting raw materials to the nearest railway station or port.
(ii) Railways were developed to encourage commercialisation of agriculture.
(iii) Postage and telegraph were introduced to enable them to control the large sub-continent.