What does hegemony means? Hegemony as …

Hegemony is defined as the dominance or leadership by a single state over other states. It is the social, economic and political dominance of a state over other states. It is the political and military supremacy over others. 

US Hegemony is the supremacy and dominance of the United States over other countries. Over the years, America has grown to be a world power; both politically and economically. 

Hard power is the use of military in order to influence and win over other states. 

During the World War II, US came out as big military force. Also after 9/11, it started a military operation against terrorism all across the world showing its military dominance. 

Soft power is the use of persuasive terms to gain power and supremacy over other nations. US has a history of using soft power to gain supremacy in the international spectrum. US Marshall Plan is an example of US using soft power. It aided Western Europe in billions to keep it safe from Soviet influence. It gained a lot of good will and support by the Europeans as a result. 

Structural power is the form of power used to systematically  interact within societies and states. US foreign policy has always helped it gain power over other states with its ways of communication. It has set up trade routes such as NATO with alliance of other countries which shows their structural power.