Select the correct text in the passage.

In addition to immigration, what is another factor that has changed American identity?

The concept of American identity has changed over time. When the colonists came to the New World from Europe, they began writing letters, essays, and articles that documented their daily experiences and hardships. Major events in US history have also had significant effects on American literature. For example, when slavery and the subsequent civil rights movement were pressing issues in society, many people wrote passionate letters, essays, poems, and biographies that expanded upon all sides of the topic.