Answer: A. the state of being the most powerful
Explanation:
Supremacy is the state of being the most powerful. It simply means having the highest authority and limitless power.
Option B is incorrect as the intentional and organized killing of a group of people based on their ethnicity, race, religion, nationality, or other trait is refered to as genocide.
Option C is incorrect as the extension of power of one nation over another, often by territorial acquisition is refered to as imperialism.
Option D is incorrect as the devotion to ones country isn't supremacy.
Therefore, the correct option is A.
Jane Adams and Ellen Gates Starr. Indeed, Adams had visited Toynbee Hall and had decided to adapt the social reformist model to the United States. She founded Hull house along with Ellen Gates. They strove to provide access to European immigrants to essential services as education, sanitation and food assistance.
These social reformers made part of the Settlement movement which aimed to improve the conditions of the working poor and to raise awareness of their struggles and misery among the middle class. Many other settlement houses were founded in the USA for that purpose in several states.
They also founded University Settlement House and several settlement schools to provide education ot the poor in order to help them extricate themselves from poverty.
Mississippi River , because that's where the hero fought