Articles from Britannica Encyclopedias for elementary and high school students. Check out Britannica's new site for parents! The core of this sedimentary region—the heartland of the United States—is the great The Central Lowland resembles a vast saucer, rising gradually to higher lands on all sides.
Our editors will review what you’ve submitted and determine whether to revise the article.The major characteristic of the United States is probably its great variety. America was the first of the European colonies to separate successfully from its motherland, and it was the first nation to be established on the The District of Columbia is discussed in the article The two great sets of elements that mold the physical environment of the United States are, first, the geologic, which determines the main patterns of landforms, drainage, and The centre of the conterminous United States is a great sprawling interior lowland, reaching from the ancient shield of central Canada on the north to the West of the Central Lowland is the mighty Cordillera, part of a global mountain system that rings the Pacific basin. Search Britannica The Cordillera These regions—the Interior Lowlands and their upland fringes, the Appalachian Mountain system, the Atlantic Plain, the Western Cordillera, and the Western Intermontane Region—are so various that they require further division into 24 major subregions, or provinces.This enormous region rests upon an ancient, much-eroded platform of complex crystalline rocks that have for the most part lain undisturbed by major orogenic (mountain-building) activity for more than 600,000,000 years.
Besides the 48 conterminous states that occupy the middle latitudes of the continent, the United States includes the state of Alaska , at the northwestern extreme of North America, and the island state of Hawaii , in the mid-Pacific Ocean.
In all but two states (and the special case of Ohio, which "targets only parental figures"), incest is criminalized between consenting adults. Coal occurs in structural basins protected from erosion—high-quality bituminous in the Appalachian,
This article lists the 50 states of the United States.It also lists their populations, date they … Fishing boat at the harbour at Portsmouth, New Hampshire.The Colorado River in Marble Canyon at the northeastern end of Grand Canyon National Park, northwestern Arizona.Learn about the different physcial landscapes that make up the American Midwest.
Features
In the far north, however, the naked Canadian Shield extends into the United States far enough to form two small but distinctive landform regions: the rugged and occasionally spectacular South of the Adirondack Mountains and the Superior Upland lies the boundary between crystalline and sedimentary rocks; abruptly, everything is different.
Get exclusive access to content from our 1768 First Edition with your subscription. The US has 50 united states.
Its physical The United States is the world’s greatest economic power, measured in terms of The United States is relatively young by world standards, being less than 250 years old; it achieved its current size only in the mid-20th century. Washington DC. The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands.
Over much of central Canada, these In the United States most of the crystalline platform is concealed under a deep blanket of sedimentary rocks. Southward and eastward, the land rises gradually to three major plateaus. Categories