In today's culture, most people used the protest song to address social issues or principle.
For example, the latest famous protest song i know is <span>'America, stand up' by Eminem. It address several disagreement of value that he had with the current president. Eminem believed that some statements and policies that the Potus made is not suitable for the value that people of america had.</span>
If you are referring to the Five Civilized Tribes, the answer is the Cherokee tribe.
C) They wanted to become powerful by obtaining riches that included gold and spices
Answer: Opportunity cost
Explanation:
The economic term which represents the value of the second best alternative that someone will give up when making a choice is refered to as the opportunity cost.
The opportunity cost is the cost of what we forgo as an individual when we make another decision. For example, if I've an option of playing football or going to work and earning $20, if I choose to play football, the opportunity cost will be the $20 that I won't get for choosing a different alternative.
You can probably find more help in the mathematics section.