The third alternative is correct (C).
<u>Both the Wall of China and the Silk Road represented, in their respective periods, the political power of China as a nation.
</u>
<u>The Great Wall</u> crosses mountains and rivers and is considered one of the great wonders of the world. Many of the stones used in its construction measure more than two meters and its weight exceeds one ton. The main reason for its construction was the desire to defend itself against the attacks of the nomadic peoples of the north, but also was used to transfer people and armaments at great speed from one side to another, demonstrating the technological character of the work.
<u>The Silk Road</u> was a series of commercial and cultural transmission routes that were central to the cultural interaction between the West and the East. Silk was certainly China's main trade item, but many other goods were also marketed. These routes allowed the development of strong commercial relations of the Chinese empire with Persia, India and the Roman Empire.
<span>The Ottoman Empire, also known as the Turkish Empire, Ottoman Turkey, was an empire founded at the end of the thirteenth century in northwestern Anatolia in the vicinity of Bilecik and Söğüt by the Oghuz Turkish tribal leader Osman.</span>
Capitalism is my best guess, considering it is one of the few forms of economy that allows mostly free production. Free enterprise could also be the answer.
