文档介绍：Seaports and harbors:
As most of these states border the Atlantic Ocean, many important seaports have been established there. Owing to its geographical position, the whole region is famous for its good harbors.
Industry: The Middle Atlantic states is rich in minerals as coal and iron for industry. 
Pittsburgh is the leading city of the nation in the production of steel before it was surpassed by Chicago.
The steel had been used for making railways, bridges and girders.
Pennsylvania is the leading state in the United States in the production of coal.
As the region is well-known for its industry, it is often described together with New England as the “Industrial Northeast” 工业化的东北部
⑵ The Middle Atlantic States 大西洋中部各州
Lying in the middle between New England and the Southern states are ：
New York （纽约）
New Jersey （新泽西）
Pennsylvania （宾夕法尼亚）
Maryland （马里兰）
Delaware （特拉华）
West Virginia （西弗吉尼亚）
Weather: The region is often spoken as the “Sunny South”, but the climate varies depending upon the different position of each state.
Agriculture: Most of the Southern land is rich. With warm weather and plentiful rainfall, the land is good for farming. Before the independence in 1776, the economy in the South was dependent mainly on agriculture.
Most planters amassed their wealth by growing tobacco, rice and indigo. After 1793, some began to grow cotton. The south became the cotton kingdom of the nation. Only Virginia and Kentucky continued to grow tobacco.
⑶ The South:
The region is very large including 11 states:
Virginia 弗吉尼亚州 Mississippi 密西西比
North Carolina 北卡罗来纳州 Tennessee田纳西州
South Carolina 南卡罗来纳州 Kentucky 肯塔基
Georgia 乔治亚 Louisiana 路易斯安那
Florida 佛罗里达 Arkansas 阿肯色
Alabama 亚拉巴马
III A Geographical Survey
⑷ The Midwest:
Location: The Midwest lies in the great valley between the Allegheny Mountains to the east and the Great Plains to the west. Including the area of th