What was one of the ways people in America can express their political opinions?

Writing a letter to Congress is a direct and traditional method for individuals in America to express their political opinions. This form of communication allows citizens to convey their thoughts, concerns, or support regarding specific issues, policies, or legislation to their elected representatives. By reaching out to Congress, individuals actively participate in the democratic process, influence policymaking, and hold their representatives accountable. This engagement is crucial as it helps create a dialogue between constituents and their government, ensuring that the voices of the public are heard in the legislative process.

The other options, while valuable in their own right, do not serve as direct expressions of political opinions. Researching history can deepen understanding of political contexts and inform opinions but does not facilitate immediate expression. Attending social events might encourage political discussion but lacks direct action in communicating opinions. Reading textbooks increases knowledge, but it also does not equate to actively voicing political views.