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The United States of America was formed after thirteen British colonies in North America declared independence from the British Empire on July 4, 1776. In the Lee Resolution, passed by the Second Continental Congress two days prior, the colonies resolved that they were free and independent states.
The borders of the oceans are the limits of Earth's oceanic waters.The definition and number of oceans can vary depending on the adopted criteria. The principal divisions (in descending order of area) of the five oceans are the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern (Antarctic) Ocean, and Arctic Ocean.
The map of North America with the Western Interior Seaway during the Campanian. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, or the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years.
The Gulf of California (Spanish: Golfo de California), also known as the Sea of Cortés (Mar de Cortés) or Sea of Cortez, or less commonly as the Vermilion Sea (Mar Vermejo), is a marginal sea of the Pacific Ocean that separates the Baja California peninsula from the Mexican mainland.
Parting of the Waters is an unusual hydrologic site at Two Ocean Pass on the Great Divide, within the Teton Wilderness area of Bridger-Teton National Forest, Wyoming, USA. Two Ocean Pass separates the headwaters of Pacific Creek , which flows west to the Pacific Ocean , and Atlantic Creek , which flows east to the Atlantic Ocean .
During the Silurian, warm, shallow seas covered most of North America. Illinois, Indiana, and Michigan were home to vast coral reefs. [17] The reefs of Indiana in particular are among the most diverse of the period on the entire continent. [19] The southeastern United States were still part of Gondwanaland during the Silurian. [20]
[110] [111] In the early Mediaeval period, the Vikings crossed the North Atlantic and even reached the northeastern fringes of North America. [112] Novgorodians had also been sailing the White Sea since the 13th century or before. [113] Meanwhile, the seas along the eastern and southern Asian coast were used by Arab and Chinese traders. [114]
The Central American Seaway (also known as the Panamanic Seaway, Inter-American Seaway and Proto-Caribbean Seaway) was a body of water that once separated North America from South America. It formed during the Jurassic (200–154 Ma ) during the breakup of the supercontinent Pangaea , and closed when the Isthmus of Panama was formed by volcanic ...