The United States __________ itself to be a middle-class nation.
举一反三
- As a nation, what is the United States often called?
- The United States is the most populous nation in the world, ranking behind China and India.
- Officially the United States of America began as an independent nation with the Declaration of Independence in July 1776.
- History shows that the United States as a nation _____ a great deal _____ the African-Americans(非洲裔美国人).
- Independence Day is regarded as the birthday of the United States as a free and independent nation. The holiday recalls the signing of the Declaration of Independence on _________.