Answer with Explanation:
"Railroads" played a vital role regarding empire-building in<em> Afro-Eurasia.</em> They became essential especially during the "Age of New Imperialism" <em>(1870s). </em>It aided the locomotion that was needed for great empires. <u>Europe became more powerful</u> because the <em>railroads, together with money</em>, allowed them to control other countries, especially the agrarian ones.
It allowed them to gain control of <em>other nation's</em><em> natural resources </em>as well. One example of this are the "trunk lines" which connect the commercial centers with the seaports in Africa. This allowed the <em>gold fields</em> and<em> diamond fields</em> to be directly connected to the port. This were then destined to the <em>factories </em>and <em>markets</em> in Europe. The railways (locomotives) also extended to other areas including Asia such as <em>China, Thailand, India, etc</em>.
The correct answer is - E.) to increase national sovereignty.
By cooperation on regional or global level the states do not, and can not really do anything about increasing the national sovereignty. The reason for that is that the national sovereignty is the matter of the state itself, its politics, policies, and handling of the situations in the country. The other countries with whom the state cooperates have nothing to do with it, nor it is their place to interfere in the national sovereignty of the other states, be it friendly states or not.
Nice, thanks for the points.
I would think its A. the rest of the options are for people that can stand still and focus.