The United States is the second largest city after new york and the largest industrial center in the Great Lakes region. Located in the northeast of Illinois, southwest of Lake Michigan, at the mouth of the Chicago River. It covers an area of 590.5 square kilometers. The population is about 2.99 million, of which blacks account for about 40%. The metropolitan area includes many small towns in six counties, such as Cook, and various cities in the lakeside area of Indiana, with an area of 1.2 1.000 square kilometers. The city extends to the west, north and south along the lakeside plain, with flat terrain.

Organizational Evolution 1673 Two French explorers came here. /kloc-in the 0 th and 8 th centuries, the local area was used as a transportation and trade point. 1795, the United States acquired 93 square kilometers of land in the local estuary. The fortress was built in 1803, and then a residential area was built around it. 1825 After the opening of the Erie Canal, the westward migration route moved northward and became the main transit point in the west. Established in 1837. 1848, the Illinois-Michigan Canal connecting the Great Lakes and the Mississippi River system was completed, and Chicago's geographical advantage as a water gateway was fully exerted. 1856 became a major railway center in the United States. /kloc-in the second half of the 0/9th century, it became a major city in the central and western regions. 1860, the first national congress of the Republican Party was held here, and Lincoln was nominated as the presidential candidate. 187 1 A fire broke out and the area of 10 square kilometer was destroyed. Rebuild quickly according to the original urban layout after the disaster. By 1900, it has become the comprehensive economic center of the United States. At the end of 2009 and the beginning of the 20th century, 65438 became the center of architectural innovation in the world, and many high-rise buildings were built. During the period of 1909, the urban construction plan of burnham was made, including the establishment of parks along Lake Michigan, the establishment of forest belts around the city, the widening of main streets and the establishment of municipal centers.

Economy is a city with diversified economy in the United States. The largest steel and meat processing industrial base in the United States, agricultural machinery, transportation machinery, chemistry, petrochemicals, motors, printing and so on are in the leading position in the country. In addition, there are wood processing, papermaking, electronics, textiles, clothing, flour and other industrial sectors. Mainly distributed in the north of Chicago and on both sides of the canal. Among them, Lupu Industrial Zone near the city center is a heavy chemical industrial zone dominated by steel. Commercial and financial prosperity, there is a huge grain and livestock market in the city. Offices of large banks and industrial and commercial companies in the city center, as well as the Chinese and Western Stock Exchanges and the Chicago Mercantile Exchange. Sears Robock is the largest retail enterprise in the United States; Wholesale and retail sales rank first in China, and it is a major mail order center in the world. Tourism is developed, receiving 5 million tourists from all over the world every year. Important political centers of the country, such as political parties, organizations and national congresses, are often held here. On May 1886, hundreds of thousands of workers went on strike in Chicago, which was the birthplace of May 1 International Labor Day.

National railway hub, important port and aviation center. There are 32 railway lines that meet here, the length of which exceeds1.2400 km; The highway transportation network is developed, and the 12 highway trunk lines intersect, which is the center of the state-wide highway system, mainly for passenger transport. Ships can go to sea via Erie Canal-Hudson River or St. Lawrence River, especially in the estuary port area of Kaliumet River. O 'Hare International Airport in the northwest of the city is one of the largest and busiest airports in the United States.

culture

Lupu District is the center of the city and the busiest business district. In the municipal center square near the municipal building, there is a giant steel sculpture of Picasso, which is about five stories high and uses more than 160 tons of steel. Sears Tower is 443 meters high, with 1 10 floors. It is the tallest building in the United States. Other modern high-rise buildings include Standard Petroleum Building, Hancock Center Building, Water Tower Plaza Building and First National Bank Building. The Chicago Museum of Art, the Field Museum of Natural History and the city's Museum of Science and Industry are internationally renowned. Others, such as Ukrainian Museum of Modern Art, Polish Museum in the United States and Lithuanian Cultural Museum in Balcer, also have their own national cultural characteristics. Grant Park on Lake Michigan has the largest photo fountain in the world, Buckingham Fountain. There are many parks and green spaces in the city, covering an area of nearly 5000 hectares. Lakeside green space is the main recreation place for citizens, and there are large forest reserves in the suburbs.

One of the major cultural and educational centers in the United States. There are 95 institutions of higher learning in the capital area. The University of Chicago is one of the famous institutions of higher learning in Chicago, USA. Illinois Institute of Technology and Northwestern University are also famous all over the country. In addition, there are various art colleges, art museums, Shedd Aquarium and Adler Planetarium. Chicago is also one of the major centers of medical training in the United States, and the public hospital Cook County Hospital is one of the largest hospitals in the United States. Chicago Symphony Orchestra is famous all over the world. The ancient water tower standing in the center of the city is a historical relic that survived the Chicago fire in 187 1.

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