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- Steel (28384 bytes)
3: ...iron, but is also more [[brittle]]. One classical definition is that steels are iron-carbon alloys wit...
5: ... [[plasticity (physics)|plastically]] formed (pounded, rolled, etc.).
8: ...l><sub>2</sub></small>— [[Pyrite]]. Iron oxide is a soft [[sandstone]]-like material with limite...
11: ...similarly soft and metallic but can dissolve considerably more carbon (as much as 2.04 wt% carbon at 1...
13: ...ry similar unit cell structure to austenite, and identical chemical composition. As such, it requires... - Eleonora di Arborea (2091 bytes)
1: ...JOINED WITH [[Eleonora d'Arborea]]'' preferably under the name "Eleanor of Arborea" and not any Italia...
5: ...nora d'Arborea''' (or Eleanora di Arboria ?) (c [[1350]] - [[1404]]) was a [[Sardinia|Sardinian]] ''giud...
7: ...the rebels and became regent to her infant son Frederick, who as next male heir became the official mo...
9: ...with [[Genoa]], and Arborea maintained its independence until 1410 (1409?).
11: ...ich came into force in April 1395. They were considered to be far in advance of the laws of other coun... - History of sculpture (6101 bytes)
4: ...oric times. Most [[Stone Age]] statuettes were made of ivory or soft stone, however some clay human a...
6: ...aterials used for sculpture during this time included basalt, diorite (a type of dark, coarse-grained ...
8: ...ith gold and mosaic inlay with a black-bearded golden bull's head.
11: ...ieved to represent Hammurabi. The head has the wide open eyes, typical of the time period.
13: ...t can have four legs visible if viewed from the side. The piece was excavated at [[Nimrud]] (in north... - Blast furnace (4721 bytes)
4: ...clear whether the blast furnace was independently developed there, or whether the technology was trans...
6: ...ource]], and the use of a [[coal]]-derived fuel made blast furnace-based iron smelting significantly l...
15: ...chemically to produce pure iron and [[carbon dioxide]], which leaks out of the furnace at the top.
17: ...into [[calcium oxide]] and additional carbon dioxide:
21: The calcium oxide reacts with various acidic impurities in the iron... - Portugal (61755 bytes)
1: ... [[Azores Islands|Azores]]and [[Madeira Islands|Madeira and Porto Santo]] (including the [[Savage Isla...
5: ...After the rise of other colonial powers, Portugal declined.
7: ...ocial and economic progress in the subsequent decades, with a clear slow-down in the last few years.
15: ...ver among some other tribes. {{Inote | ''Hist de Portugal - A Forma磯 do Territ'', page 9, "A...
17: ...atin Right]] in [[73|73 AD]].{{Inote | ''Hist de Portugal - A Forma磯 do Territ'', page 135, ... - Cotton (7876 bytes)
4: ...gether and interlocked. This interlocked form is ideal for [[spinning]] into a fine [[yarn]].
9: ...a domesticated different species of cotton independently thousands of years ago.
13: ...preposterous belief: "There grew there India a wonderful tree which bore tiny lambs on the ends of its...
28: ...able. Historically, one of the most economically destructive pests in cotton production has been the ...
30: ...on is a perennial crop in the tropics and without defoliation or freezing, the plant will continue to ... - Ra (2793 bytes)
1: ...age:Ancient_eygpt-1.jpg|thumb||170px|Clipart provided by <br> [http://classroomclipart.com Classroom C...
2: ...rief suspension during the time of [[Akhenaten]] (1350-1334 BC) when [[monotheism|monotheistic]] worship...
4: ...d into a god of the setting sun, Atum became considered an aspect of Ra. [[Khepri]], the less importan...
8: ...r [[Apep]] (representing darkness), who wished to devour Ra. Temporary failure to protect Ra was said ...
10: ...e symbols of Ra are the [[solar symbols]] of a golden disk or the symbol ⊙ (Circle with a point ... - Aelianus Tacticus (2273 bytes)
1: ... of the [[2nd century]] [[Anno domini|A.D.]], resident at [[Rome]]. He is sometimes confused with the...
3: ...therlands|Dutch]] systems, and the translations made in the 16th century formed the groundwork of nume... - Mercury (planet) (22924 bytes)
1: ...anges from −0.4 to 5.5 in [[apparent magnitude]]; Mercury is sufficiently "close" to the Sun tha...
3: ...not realized it could alternately appear on one side of the Sun and then the other. It was called [[He...
12: ...aded [[Impact crater|crater]]s, where it has been deposited by [[comet]] impacts and/or gases arising ...
16: ...idal bulge]]s, raised by the [[Sun]] (the Sun's tides on Mercury are about 17% stronger than the Moon'...
28: ...of Earth compresses the planet and creates a high density. Mercury has only 5.5% of Earth's mass. The ... - Giovanni Boccaccio (10149 bytes)
2: ...tic, spirited and clever individuals who are grounded in reality (in contradiction to the characters o...
5: ...lso the place of his birth, this has been largely depreciated as a romanticism and his place of birth ...
7: ... which he had no affinity and he eventually persuaded his father to let him study law at the ''Studium...
9: ...s with fellow scholars. His early influences included Paolo da Perugia (a curator and author of a coll...
11: ...eoffrey Chaucer|Chaucer]]'s ''[[Troilus and Criseyde]]''), ''Teseida'' (ditto the ''Knight's Tale''), ... - Hundred Years' War (30012 bytes)
3: ...ch unit" that was both battlefield and prize (Braudel 1984 p. 353).
5: ...the roles of nobles and peasants, and overall key developments in the early growth of nations and new ...
8: ...t]] of [[1066]], defeating the [[Anglo-Saxon]] leadership and installing a new [[Anglo-Norman]] power ...
10: ... desire to re-take a former kingdom, and personal desires on the part of the nobility to gain wealth a...
13: ...Philip IV]] died, leaving three male heirs. The eldest son, [[Louis X of France|Louis X]], died in [[1... - History of astronomy (13532 bytes)
2: [[Astronomy]] is probably the oldest of the [[natural science]]s, dating back to [[a...
8: ...ers were [[priest]]s ([[Magi]]), and that their understanding of the "[[heaven]]s" was seen as "[[divi...
10: ...alendar is based on the Roman calendar, which divided the year into twelve months of alternating thirt...
14: ...ennium BC, but their contents appear to be much older.
18: ...t on [[Vedic astrology]] that has been dated to [[1350 BC]], was written by [[Lagadha]]. - Nubia (8928 bytes)
1: ... [[Sudan]], but in ancient times it was an independent kingdom.
5: ...9th centuries AD. It is considered ancestral to modern day Nobiin.
9: ...]]. It consisted of semi-nomadic groups who subsided by herding [[sheep]], [[goat]]s, and some [[catt...
11: ...ously the B-Group people were thought to have invaded from elsewhere. Today most historians believe th...
13: ...man beings and it is possible that there was a sudden influx of Saharan nomads. - Des Moines, Iowa (13222 bytes)
2: ...300px|The State Capitol of Iowa, featuring its golden dome.]]
4: ...ncorporated on [[September 22]], [[1851]] as Fort Des Moines.
5: ...nes" in [[1857]]. [http://www.ci.des-moines.ia.us/departments/AC/Information/AChistoricalinfo.htm]
8: ...iver]] (from [[French language|French]] ''Rivi貥 des Moines'', i.e. "River of the Monks") and [[Racco...
9: [[Image:Iowa_state_map.jpg|thumb|250px|Image provided by [http://classroomclipart.com Classroom Clipar... - List of philosophers (79981 bytes)
23: *[[Adelard of Bath]], (12th century){{fn|C}}
26: *[[Aedesius]], (d. 355)
27: *[[Aenesidemus]], (1st century BC){{fn|R}}
34: *[[Pierre d'Ailly]], (1350-1420){{fn|C}}{{fn|R}}
37: *[[Alain de Lille]], (c. 1128-1202) - History of Germany (53864 bytes)
5: ...s often known as the second Reich to indicate its descent from the medieval empire. By the same reason...
7: ...tion of the two Germanys in [[1990]]. For further details, please consult the ''main articles'' given ...
10: ''See also: [[Germanic tribes]], [[Confederations of Germanic Tribes]], [[Germania]], [[Germ...
12: ...us Cornelius Tacitus]], author of ''Germania'', a descriptive work about the Germanic people at the Ro...
13: ... from [[Schleswig-Holstein]], advancing to the [[Oder]] and the [[Rhine]] and into southern Germany. - Mycenaean Greece (6175 bytes)
8: ...acy]]. Around [[1400 BC]] the [[Mycenaeans]] extended their control to [[Crete]], center of the [[Mino...
10: ...in a sitting position, and some of the nobility underwent [[mummy|mummification]].
12: ...teracy. Historians have traditionally blamed this decline on an invasion by another wave of Greek peop...
17: The beginnings of the Mycenean decorated pottery on the Greek mainland date to the ...
18: ...rumark 1-333) that is used internationally in the description of Mycenean and Minoan pottery. - Iron (23778 bytes)
2: <table border="1" cellpadding="2" cellspacing="0" align="right...
4: <table align="center" border="0">
24: <td>[[Density]], [[Mohs hardness scale|Hardness]] </td>
38: <td>[[van der Waals radius]] </td><td>...
44: <td>[[Oxidation state]]s ([[Oxide]]) </td><td>2,'''3''',4,6 (amphot... - Krypton (9031 bytes)
2: {| border="1" cellpadding="2" cellspacing="0" align="right...
4: {| align="center" border="0"
24: | [[Density]], [[Mohs hardness scale|Hardness]]
41: | [[van der Waals radius]]
50: | [[Oxidation state]]s ([[Oxide]]) - First Crusade (34670 bytes)
1: {{Crusade}}
2: ...tern world|Western power]], and was the only crusade – in contrast to the many that followed &nd...
5: ...mbined with the relative stability of European borders after the [[Christianization]] of the [[Viking]...
9: ...eminated to the general public the idea of a Crusade to capture the Holy Land with the famous words: "...
12: ...eighbours, than with cooperating against the crusaders.
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