<span>Social Darwinism applied the idea of natural selection to the development of business and society. (hope its helps you :)
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B. in the late eighteenth century
Greece is a crossroad of cultures, it is in Europe, but also it is near Egypt and the East. So it had a big exchange of ideas and philosophy, it developped science and trade, and being surrounded by the sea, it developped maritime skills (military and trading fleet). This lasted form antiquity to modern history.
The correct answer is A. Technological advances such as s<em>team power, air brakes, automatica lubricators and steel tracks</em> have affected the railroads very positively, since it has made it possible that the rail network could become a safer, more efficient and more reliable means of transportation for goods.
