用英语介绍美国的首都讲一下美国的首都,位于中国的哪里,首都居住了大约几百万人,有什么主要风景．．．．HELP!行行好!

The United States is now a total of 50 states,and a similar colonial Puerto Rico,and other overseas territories,such as Guam.
State
United States of America (The United States of America).United:United States:State,America:the Americas;
Abbreviations:USA (or US)
English may also be that the United States America,in fact the representative of the Inter-American America.However,the Americans used to call it,however the entire United States.American intention of the Americas,including Canadians,Mexicans.But now basically represent Americans.In the day-to-day terms,"United states",or "The States" to refer to the United States.States:State of the complex.
Aliases
The other the name of the United States,"Uncle Sam." BAR legend during the war in 1812,New York City businessman Sam Wilson Teluoyi (1766.9.13 - 1854.7.31) in the beef supply barrels write "us",said this is the United States property.This and his nickname "Uncle Sam" ( "Uncle Sam"),abbreviations ( "us") the same,then people will say these with "us" materials are marked "Uncle Sam".Later,"Uncle Sam" on the United States gradually became the nickname.19 in the 1930s,the United States will cartoonist of "Uncle Sam" as a painting wearing a Star of Gaomao,goat beard beard of white hair Shougao elderly.In 1961 the United States Congress passed a resolution to formally recognize the "Uncle Sam" as a symbol of the United States.
Flag
American flags for the Stars and Stripes.A horizontal rectangle,the length and width ratio 19:10.13 from the main red,white width of the composition of the seven red,six white; blue flag for the upper left corner of rectangle,which Pai points and nine rows of 50 white five-pointed star.Red symbolizes strength and courage,white,purity and innocence,blue symbol of vigilance,perseverance and justice.13 representatives of the wide launched the war of independence and the first victory of the 13 states,50 five-pointed star on behalf of the state of the United States of America.In 1818 the United States Congress passed a law,the red and white flag of the fixed width of 13,five-pointed star of America,and the number should be consistency.The increase of one state,one flag on the increase-general in the new states to join the second year after July 4 implementation.So far the national flag has been increased to 50 stars,representing one of the 50 states.June 14 each year as "the American flag develop Day."
National Emblem
United States national emblem for the main chest with a shield-shaped pattern of the sea eagles remain (vultures),the United States of the national bird,it is strength,courage,freedom and enduring symbol.Face shield for the first half of the blue horizontal rectangle,for the second half of red,white Vertical Bar,with its implication flag.Eagle on the top of the crown symbol of a sovereign country in the world in the birth of a new and independent country - the United States of America; top crown with 13 white five-pointed star,representing the original 13 American states.Eagle Liangzhao were clinging to the olive branch and arrows,symbol of peace and force.Olecranon Diaozhao with yellow on the Order of Latin words "Tang's for",which means the United States of America from many states composition is a complete country.
National Anthem
"The Star-Spangled Banner" (The Star-Spangled Banner).Has been translated as "Stars and Stripes song," the United States was born in Baltimore.Francis is a song called Shiketeji lawyers in the United States,Britain and the United States war through the smoke on the battlefield to see the Stars and Stripes after the British shelling is still fluttering high above the fortress,a great sigh and wrote Jiying .Music scores is "the king of Marche," a well-known representative of Susa.1931 by the United States Congress officially designated as the national anthem.
National flower
Rose.A symbol of beauty,fragrance,enthusiasm and love.Passed by the Senate in 1985 as national flower.
State -
Sapphire
State birds
Remain a sea eagles (vultures).The United States is the world's first set of birds countries.Remain birds first appeared in the United States is on the banner during the War of Independence.July 4,1776 Second Continental Meeting issued a "Declaration of Independence" and decided the nascent United States must have a special emblem.June 20,1782,the United States Congress passed a resolution to the North American sea eagles remain a unique country as the United States birds,and birds such as the national emblem of the main logo.Thai remain beautiful appearance,temperament violent,and the head of fullness of feathers,it is the most salient characteristic of the two white,which remain white-tailed.It represents a bold,strength and victory.
Independence Day
July 4,1776.September 3,1783 the British recognition of its independence.Therefore,the annual July 4th,Independence Day (Independence Day) holiday.
Land area (two statements)
1.Official that the United States:9826630 square kilometers (one million square kilometers of land area of 915.8960),the local things 4,500 km long,north-south width 2,700 km coastline of 22,680 kilometers,ranking third in the world.
2.Believe that the Chinese Government:9372614 square kilometers,second only to China,ranking fourth in the world.
Population
300 million and 3.15 million (January 1,2008,the world's first 3).Population density of 31 persons per square kilometer (the world's first 144).Whites accounted for 75 percent,Latinos accounted for 12.5 percent,12.3 percent of blacks,Asians accounted for 3.6%,the Chinese about 2.43 million,or 0.9%,to the United States who has more than (2000 US census data).African Americans,Latinos and Asian-Americans and other ethnic minorities of the population has reached 100.7 million (as of July 2006).General English.56% of the residents of a Christian Protestant,28 percent Catholic,2% of the Jews,to profess other religions accounted for 4%,do not belong to any religion or 10 percent.