United States of America. United: United States, States: plural States, America: United States; Abbreviation: USA (or US) American English is also called America. In fact, the United States represents the United States. Americans use it to call the whole United States. Americans often say, "God bless America". It means God bless America. American originally meant Americans, including Canadians, Mexicans and Americans. Now it basically only represents Americans. In everyday language, the United States is also called "America" or "States". When shouting slogans or cheering, use USA. Definition of country name: the United States of America is the abbreviation of U.S.A, and the United States is named after the state. In English, America and America are the same word "America", but the Chinese translation is different. The former refers to the whole America, and the latter refers to the United States. The nickname of the United States is "Uncle Sam". Legend has it that during the Anglo-American War of 18 12, sam wilson, a businessman from Troy, new york (1766.9.13-1854.7.31), wrote on a barrel that supplied beef to the army. This is exactly the same as the abbreviation of his nickname "Uncle Sam" ("America"), so people call these materials labeled "America" "Uncle Sam". Later, "Uncle Sam" gradually became the nickname of the United States. In 1930s, American cartoonists described "Uncle Sam" as a tall, white-haired old man with a star-spangled banner and a goatee. 196 1 year, the U.S congress passed a resolution to formally recognize "Uncle Sam" as a symbol of the United States. The American flag is the star-spangled banner. It is a horizontal rectangle with the aspect ratio of 19: 10. The main body consists of 13 red and white wide strips, 7 red strips and 6 white strips; In the upper left corner of the flag is a blue rectangle with 9 rows of 50 white five-pointed stars. Red symbolizes strength and courage, white represents purity and innocence, and blue symbolizes vigilance, perseverance and justice. 13 wide stripes represent the first 13 states that launched and won the War of Independence, and 50 five-pointed stars represent the number of states in the United States of America. 18 18, the us congress passed a bill, and the red, white and wide stripes on the national flag were fixed at 13, and the number of five-pointed stars should be consistent with the number of States in the United States. Every time a state is added, a star is added to the national flag, which is generally implemented on July 4 of the second year after NSW joins. So far, the national flag has increased to 50 stars, representing 50 States in the United States. June 14 is "American flag day" every year. The main body of the national emblem of the United States is a vulture (vulture) with a shield pattern on its chest, which is the national bird of the United States. It is a symbol of strength, courage, freedom and immortality. The upper part of the shield is a blue horizontal rectangle, and the lower part is a red and white vertical bar, which means the same as the national flag. The crown on the eagle symbolizes the birth of a new independent country in the world, the United States of America; There are 13 white five-pointed stars in the crown, representing the original 13 states in the United States. The eagle's two claws hold an olive branch and an arrow respectively, symbolizing peace and strength. The yellow ribbon in the beak reads "e pluribus unum" in Latin, which means that the United States of America is a complete country composed of many states. National anthem "Home of the Brave". Song of the Stars and Stripes was once translated into English. The lyrics were written by an American lawyer named Francis Scott Key when he saw the stars and stripes flying high above the fortress bombed by the British army through the smoke of the British war. Music score is the famous masterpiece of Susa, the "King of March". 193 1 was officially designated as the national anthem by the US Congress. Washington, D.C. has a population of 588,300 (2007) and an area of 65,438+077.0 square kilometers.