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Maya civilization. Uxmal, Nunnery Quadrangle Artist's copy of Bonampak Painting, Mexico, 700 C.E. Throne 1 of Piedras Negras The Maya is a Mesoamerican civilization, noted for Maya script, the only known fully developed writing system of the pre-Columbian Americas, as well as for its art, architecture, and mathematical and astronomical systems. Initially established during the Pre-Classic period (c. 2000 BC to AD 250), according to the Mesoamerican chronology, many Maya cities reached their highest state of development during the Classic period (c.

The Maya civilization shares many features with other Mesoamerican civilizations due to the high degree of interaction and cultural diffusion that characterized the region. The Maya peoples survived the Classic period collapse and the arrival of the Spanish conquistadores and sixteenth-century Spanish colonization of the Americas. Geographical extent Extent of Classic and Post-Classic Maya civilization History Preclassic period Classic period "Caana" at Caracol. Internet. U.S. Army soldiers "surfing the Internet" at Forward Operating Base Yusifiyah, Iraq The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks[1] that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies.

The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), the infrastructure to support email, and peer-to-peer networks for file sharing and telephony. Most traditional communications media, including telephony and television, are being reshaped or redefined by the Internet, giving birth to new services such as voice over Internet Protocol (VoIP) and Internet Protocol television (IPTV).

Terminology Users. Papahānaumokuākea Marine National Monument. Description[edit] The area was proclaimed the Northwestern Hawaiian Islands Marine National Monument by U.S. President George W. Bush on June 15, 2006; it was renamed Papahānaumokuākea in 2007, and inscribed on the World Heritage list as Papahānaumokuākea on 30 July 2010, at the 34th Session of the World Heritage Committee, Brasilia.[2] The area is managed in partnership with the Department of Commerce, the Department of the Interior, and the State of Hawaii. The name for the area was inspired by the names of the Hawaiian creator goddess Papahānaumoku and her husband Wakea.

Although it is not a sanctuary, the ocean area is part of a system of 13 National Marine Sanctuaries administered by the National Oceanic and Atmospheric Administration (NOAA). The Hawaiian Islands National Wildlife Refuge, with an area of 254,418.1 acres (397.53 sq mi; 1,029.6 km2)[3] in the monument, is administered by the U.S. Area and administration[edit] History and establishment[edit] George W. References[edit] Polar ice cap. A polar ice cap is a high latitude region of a planet or natural satellite that is covered in ice.[1] There are no requirements with respect to size or composition for a body of ice to be termed a polar ice cap, nor any geological requirement for it to be over land; only that it must be a body of solid phase matter in the polar region. This causes the term "polar ice cap" to be something of a misnomer, as the term ice cap itself is applied with greater scrutiny as such bodies must be found over land, and possess a surface area of less than 50,000 km²: larger bodies are referred to as ice sheets.

The composition of the ice will vary. For example Earth's polar ice caps are mainly water ice, while Mars's polar ice caps are a mixture of solid phase carbon dioxide and water ice. Polar ice caps form because high latitude regions receive less energy in the form of solar radiation from the sun than equatorial regions, resulting in lower surface temperatures. Earth[edit] North Pole[edit] Mars[edit] Old City (Jerusalem) The Old City (Hebrew: העיר העתיקה‎, Ha'Ir Ha'Atiqah, Arabic: البلدة القديمة‎, al-Balda al-Qadimah, Armenian: Հին Քաղաք, Hin K'aghak' ) is a 0.9 square kilometers (0.35 sq mi) walled area[2] within the modern city of Jerusalem.

Until 1860, when the Jewish neighborhood Mishkenot Sha'ananim was established, this area constituted the entire city of Jerusalem. The Old City is home to several sites of key religious importance: the Temple Mount and Western Wall for Jews, the Church of the Holy Sepulchre for Christians, and the Dome of the Rock and al-Aqsa Mosque for Muslims. It was added to the UNESCO World Heritage Site List in 1981. The current population of the Old City resides mostly in the Islamic and Christian quarters.

As of 2007 the total population was 36,965 (26,544 in the Muslim quarter, 5442 in the Christian, 2555 in the Jewish, and 2424 in the Armenian quarter).[3] Suleiman I 1530 Arab market Old City promenade in snow, 2008 Western Wall plaza Jewish quarter. Potala Palace. The Potala Palace (Tibetan: པོ་ཏ་ལ, Wylie: Po ta la, ZYPY: Bodala; simplified Chinese: 布达拉宫; traditional Chinese: 布達拉宮; pinyin: Bùdálā Gōng) in Lhasa, Tibet Autonomous Region, China, was the chief residence of the Dalai Lama until the 14th Dalai Lama fled to India during the 1959 Tibetan uprising. It is now a museum and UNESCO World Heritage Site.

The palace is named after Mount Potalaka, the mythical abode of Chenresig or Avalokitesvara.[1] Lozang Gyatso, the Great Fifth Dalai Lama, started its construction in 1645[2] after one of his spiritual advisers, Konchog Chophel (died 1646), pointed out that the site was ideal as a seat of government, situated as it is between Drepung and Sera monasteries and the old city of Lhasa.[3] It may overlay the remains of an earlier fortress, called the White or Red Palace,[4] on the site built by Songtsen Gampo in 637.[5] The building measures 400 metres east-west and 350 metres north-south, with sloping stone walls averaging 3 m. thick, and 5 m.