I'll give you a question, please answer with step-by-step reasoning process.
Roberto sees a bald eagle, and wonders what it has come to symbolize?\nOptions:\n- united states of america\n- maine\n- colorado\n- chicken\n- countryside

united states of america
The bald eagle is the national bird of the United States.

National bird of a country symbolizes it.

.

Final answer: united states of america