Westerly winds, which are named so because they originate from the west, are responsible for many of the weather patterns in the US.
<span>In the 15th and 16th centuries, in particular, Europeans were intent on seeking </span><span>out a new and faster route to Asian trade markets than those that already </span>existed. Their searches led to the discovery of the New World of the Americas, which was then explored both for its intrinsic wealth and for the sake of that <span>still undiscovered, and still desired, "Passage to the East."</span>
<span>Magma that squeezes into a horizontal crack is called a sill. Magma that squeezes into a vertical crack is called a dike. Both are considered to be rock intrusions wherein magma seeps into the cracks of old sedimentary rock formations. The difference is that sills are tubular and horizontal in nature, while dikes are vertical in nature.</span>
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The Appalachian Mountains are a vast system of North American mountain ranges. They lie partly in Canada , but mostly in the United States , forming a zone, from 150-500 kilometers (approx. 90 to 300 miles) wide, running 2,400 km (1,500 miles) south and westward from Newfoundland and Labrador in Canada to central Alabama in the United States, with foothills in northeastern Mississippi .
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