Answer with Explanation:
"Railroads" played a vital role regarding empire-building in Afro-Eurasia. They became essential especially during the "Age of New Imperialism" (1870s). It aided the locomotion that was needed for great empires. Europe became more powerful because the railroads, together with money, allowed them to control other countries, especially the agrarian ones.
It allowed them to gain control of other nation's natural resources as well. One example of this are the "trunk lines" which connect the commercial centers with the seaports in Africa. This allowed the gold fields and diamond fields to be directly connected to the port. This were then destined to the factories and markets in Europe. The railways (locomotives) also extended to other areas including Asia such as China, Thailand, India, etc.
The railroads have effect on process of empire-building in A. Eurasi between 1860 and 1918 in the sense that the political power in Asia and Africa were increased by the European.
In A. Eurasia, there were great benefits that was associated to railroads in the process of Empire Building and this increased European political power.
This process, give room for different regions of the world to interact, and increase the European political power.
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