The Europeans built roads, bridges, and railways in african colonies cause it helped them transfer or trade materials like gold, meat, supplies, etc... but now in this century it helps the african colonies with there transportations <span />
To obtain the raw material more quickly is the right answer.
Explanation:
The industrial development in Europe to a large extent depended on the supply of raw material from these colonies. However, to obtain the raw material more quickly the colonists from Europe began constructing the railroads. Moreover, the development of the railroads was a cheaper mode of transportation.
