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History of Native Americans in the United StatesThe history of Native Americans in the United States began tens of thousands of years ago with the settlement of the Americas by the Paleo-Indians. The Eurasian migration to the Americas occurred over millennia via Beringia, a land bridge between Siberia and Alaska, as early humans spread southward and eastward, forming distinct cultures ...
Sign marking the 31st parallel north at Cape Sata, Japan In the United States, the 31st parallel defines part of the border between Mississippi and Louisiana, and part of the border between Alabama and Florida. The 31st parallel north is a circle of latitude that is 31 degrees north of the Earth's equatorial plane. It crosses Africa, Asia, the Pacific Ocean, North America, and the Atlantic ...
ASTM C219 [13] defines portland cement as: a hydraulic cement produced by pulverizing clinker, consisting essentially of crystalline hydraulic calcium silicates, and usually containing one or more of the following: water, calcium sulfate, up to 5 % limestone, and processing additions The European Standard EN 197-1 uses the following definition: Portland cement clinker is a hydraulic material ...
Willard Carroll Smith II was born on September 25, 1968, in Philadelphia, to Caroline (née Bright), a school board administrator, and Willard Carroll Smith Sr., [13][14] a U.S. Air Force veteran [15] and refrigeration engineer. His mother graduated from Carnegie Mellon University. [16] He grew up in West Philadelphia's Wynnefield neighborhood [17] and was raised Baptist. [18] He has an elder ...
A file signature is data used to identify or verify the content of a file. Such signatures are also known as magic numbers or magic bytes and are usually appended at the beginning of the file. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible. However, some file signatures can be recognizable when ...
The oldest known written mention of "Oman" is found on a tomb in the Mleiha Archeological Center in the United Arab Emirates. [22] The name "Oman" is believed to predate Pliny the Elder ’s reference to "Omana" [23] and Ptolemy 's reference to "Omanon". (Ὄμανον ἐμπόριον in Greek). [24] Both of these references likely pertain to the ancient city of Sohar. [25] The city or ...
The structure of the United States Navy consists of four main bodies: the Office of the Secretary of the Navy, the Office of the Chief of Naval Operations, the operating forces (described below), and the Shore Establishment.
The binary logarithm function may be defined as the inverse function to the power of two function, which is a strictly increasing function over the positive real numbers and therefore has a unique inverse. [7] Alternatively, it may be defined as ln n/ln 2, where ln is the natural logarithm, defined in any of its standard ways. Using the complex logarithm in this definition allows the binary ...