1.
Iraq
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The capital, and largest city, is Baghdad. The main ethnic groups are Arabs and Kurds, others include Assyrians, Turkmen, Shabakis, Yazidis, Armenians, Mandeans, Circassians, around 95% of the countrys 36 million citizens are Muslims, with Christianity, Yarsan, Yezidism, and Mandeanism also present. The official languages of Iraq are Arabic and Kurdish, two major rivers, the Tigris and Euphrates, run south through Iraq and into the Shatt al-Arab near the Persian Gulf. These rivers provide Iraq with significant amounts of fertile land, the region between the Tigris and Euphrates rivers, historically known as Mesopotamia, is often referred to as the cradle of civilisation. It was here that mankind first began to read, write, create laws, the area has been home to successive civilisations since the 6th millennium BC. Iraq was the centre of the Akkadian, Sumerian, Assyrian and it was also part of the Median, Achaemenid, Hellenistic, Parthian, Sassanid, Roman, Rashidun, Umayyad, Abbasid, Ayyubid, Mongol, Safavid, Afsharid, and Ottoman empires. Iraqs modern borders were mostly demarcated in 1920 by the League of Nations when the Ottoman Empire was divided by the Treaty of Sèvres, Iraq was placed under the authority of the United Kingdom as the British Mandate of Mesopotamia. A monarchy was established in 1921 and the Kingdom of Iraq gained independence from Britain in 1932, in 1958, the monarchy was overthrown and the Iraqi Republic created. Iraq was controlled by the Arab Socialist Baath Party from 1968 until 2003, after an invasion by the United States and its allies in 2003, Saddam Husseins Baath Party was removed from power and multi-party parliamentary elections were held in 2005. The American presence in Iraq ended in 2011, but the Iraqi insurgency continued and intensified as fighters from the Syrian Civil War spilled into the country, the Arabic name العراق al-ʿIrāq has been in use since before the 6th century. There are several suggested origins for the name, one dates to the Sumerian city of Uruk and is thus ultimately of Sumerian origin, as Uruk was the Akkadian name for the Sumerian city of Urug, containing the Sumerian word for city, UR. An Arabic folk etymology for the name is rooted, well-watered. During the medieval period, there was a region called ʿIrāq ʿArabī for Lower Mesopotamia and ʿIrāq ʿajamī, for the region now situated in Central and Western Iran. The term historically included the south of the Hamrin Mountains. The term Sawad was also used in early Islamic times for the region of the plain of the Tigris and Euphrates rivers. In English, it is either /ɪˈrɑːk/ or /ɪˈræk/, the American Heritage Dictionary, the pronunciation /aɪˈræk/ is frequently heard in U. S. media. Since approximately 10,000 BC, Iraq was one of centres of a Caucasoid Neolithic culture where agriculture, the following Neolithic period is represented by rectangular houses. At the time of the pre-pottery Neolithic, people used vessels made of stone, gypsum, finds of obsidian tools from Anatolia are evidences of early trade relations
2.
Sumer
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Living along the valleys of the Tigris and Euphrates, Sumerian farmers were able to grow an abundance of grain and other crops, the surplus of which enabled them to settle in one place. Proto-writing in the dates back to c.3000 BC. The earliest texts come from the cities of Uruk and Jemdet Nasr and date back to 3300 BC, modern historians have suggested that Sumer was first permanently settled between c.5500 and 4000 BC by a West Asian people who spoke the Sumerian language, an agglutinative language isolate. These conjectured, prehistoric people are now called proto-Euphrateans or Ubaidians, some scholars contest the idea of a Proto-Euphratean language or one substrate language. Reliable historical records begin much later, there are none in Sumer of any kind that have dated before Enmebaragesi. Juris Zarins believes the Sumerians lived along the coast of Eastern Arabia, todays Persian Gulf region, Sumerian civilization took form in the Uruk period, continuing into the Jemdet Nasr and Early Dynastic periods. During the 3rd millennium BC, a cultural symbiosis developed between the Sumerians, who spoke a language isolate, and Akkadian-speakers, which included widespread bilingualism. The influence of Sumerian on Akkadian is evident in all areas, from lexical borrowing on a scale, to syntactic, morphological. This has prompted scholars to refer to Sumerian and Akkadian in the 3rd millennium BC as a Sprachbund, Sumer was conquered by the Semitic-speaking kings of the Akkadian Empire around 2270 BC, but Sumerian continued as a sacred language. Native Sumerian rule re-emerged for about a century in the Neo-Sumerian Empire or Third Dynasty of Ur approximately 2100-2000 BC, the term Sumerian is the common name given to the ancient non-Semitic-speaking inhabitants of Mesopotamia, Sumer, by the East Semitic-speaking Akkadians. The Sumerians referred to themselves as ùĝ saĝ gíg ga, phonetically /uŋ saŋ gi ga/, literally meaning the black-headed people, the Akkadian word Shumer may represent the geographical name in dialect, but the phonological development leading to the Akkadian term šumerû is uncertain. Hebrew Shinar, Egyptian Sngr, and Hittite Šanhar, all referring to southern Mesopotamia, in the late 4th millennium BC, Sumer was divided into many independent city-states, which were divided by canals and boundary stones. Each was centered on a dedicated to the particular patron god or goddess of the city. The Sumerian city-states rose to power during the prehistoric Ubaid and Uruk periods, classical Sumer ends with the rise of the Akkadian Empire in the 23rd century BC. Following the Gutian period, there is a brief Sumerian Renaissance in the 21st century BC, the Amorite dynasty of Isin persisted until c.1700 BC, when Mesopotamia was united under Babylonian rule. The Sumerians were eventually absorbed into the Akkadian population, 2500–2334 BC Akkadian Empire period, c. 2218–2047 BC Ur III period, c, 2047–1940 BC The Ubaid period is marked by a distinctive style of fine quality painted pottery which spread throughout Mesopotamia and the Persian Gulf. It appears that this culture was derived from the Samarran culture from northern Mesopotamia and it is not known whether or not these were the actual Sumerians who are identified with the later Uruk culture
3.
Akkadian Empire
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The empire united all the Akkadian and Sumerian speakers under one rule. The Akkadian Empire controlled Mesopotamia, the Levant, and eastern and southern parts of Anatolia and Iran, sending military expeditions as far south as Dilmun and Magan in the Arabian Peninsula. During the 3rd millennium BC, there developed an intimate cultural symbiosis between the Sumerians and the Akkadians, which included widespread bilingualism. Akkadian gradually replaced Sumerian as a spoken language somewhere between the 3rd and the 2nd millennia BC, the Akkadian Empire reached its political peak between the 24th and 22nd centuries BC, following the conquests by its founder Sargon of Akkad. Under Sargon and his successors, the Akkadian language was imposed on neighboring conquered states such as Elam. Akkad is sometimes regarded as the first empire in history, though there are earlier Sumerian claimants, the Bible refers to Akkad in Genesis 10,10, which states that the beginning of Nimrods kingdom was in the land of Akkad. Nimrod is a Hebrew name not attested in Mesopotamians sources, many have pointed out similarities with the legend of Gilgamesh who founded Uruk, which is said to be the city Nimrod came to power. Today, some 7,000 texts from the Akkadian period alone are known, many later texts from the successor states of Assyria and Babylonia also deal with the Akkadian Empire. Understanding of the Akkadian Empire continues to be hampered by the fact that its capital Akkad has not yet been located, likewise, material that is thought to be Akkadian continues to be in use into the Ur III period. Many of the recent insights on the Akkadian Empire have come from excavations in the Upper Khabur area in modern northeastern Syria which was to become a part of Assyria after the fall of Akkad. For example, excavations at Tell Mozan brought to light a sealing of Taram-Agade, an unknown daughter of Naram-Sin. The excavators at nearby Tell Leilan have used the results from their investigations to argue that the Akkadian Empire came to an end due to a sudden drought, the so-called 4.2 kiloyear event. The impact of this event on Mesopotamia in general, and on the Akkadian Empire in particular. The Akkadian Period is contemporary with, EB IV, EB IVA and EJ IV, the absolute dates of their reigns are approximate. The Akkadian Empire takes its name from the region and city of Akkad, although the city of Akkad has not yet been identified on the ground, it is known from various textual sources. Among these is at least one text predating the reign of Sargon, together with the fact that the name Akkad is of non-Akkadian origin, this suggests that the city of Akkad may have already been occupied in pre-Sargonic times. Sargon of Akkad defeated and captured Lugal-Zage-Si in the Battle of Uruk, the earliest records in the Akkadian language date to the time of Sargon. Sargon was claimed to be the son of Laibum or Itti-Bel, a humble gardener, One legend related of Sargon in Assyrian times says that My mother was a changeling, my father I knew not
4.
City-state
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A city-state is a sovereign state that consists of a city and its dependent territories. A great deal of consensus exists that the term applies to Singapore, Monaco. A number of small states share similar characteristics, and therefore are sometimes also cited as modern city-states. Occasionally, other states with high population densities, such as San Marino, are also cited. Several non-sovereign cities enjoy a degree of autonomy, and are sometimes considered city-states. Hong Kong and Macau, along with independent members of the United Arab Emirates, most notably Dubai, scholars have classed the Viking colonial cities in medieval Ireland, most importantly Dublin, as city-states. In Cyprus, the Phoenician settlement of Kition was a city-state that existed from around 800 BC until the end of the 4th century BC. The success of regional units coexisting as autonomous actors in loose geographical and cultural unity, as in Italy and Greece. However, such small political entities often survived only for short periods because they lacked the resources to defend themselves against incursions by larger states, thus they inevitably gave way to larger organisations of society, including the empire and the nation-state. In the history of Mainland Southeast Asia, aristocratic groups, Buddhist leaders, the system existed until the 19th century when colonization by European powers, and Thailands resulted in the adoption of the modern concept of statehood. In the Holy Roman Empire the Free Imperial Cities enjoyed a considerable autonomy, some, like the three Hanseatic cities of Bremen, Hamburg and Lübeck, pooled their economic relations with foreign powers and were able to wield considerable diplomatic clout. Under Habsburg rule the city of Fiume had the status of a Corpus separatum, a later city-state, though lacking sovereignty, was West Berlin, being a state legally not belonging to any other state, but ruled by the Western Allies. They allowed – notwithstanding their overlordship as occupant powers – its internal organisation as one state simultaneously being a city, though West Berlin maintained close ties to the West German Federal Republic of Germany, it was legally never part of it. But the idea of leaving the United States proved too radical even in the turmoil of 1861 and was poorly received, the war, and especially conscription, was nevertheless often unpopular in the city, sparking the deadly New York Draft Riots. The neighboring City of Brooklyn, in contrast, was staunchly Unionist, the Free City of Danzig was a semi-autonomous city-state that existed between 1920 and 1939, consisting of the Baltic Sea port of Danzig and nearly 200 towns in the surrounding areas. It was created on 15 November 1920 under the terms of Article 100 of the 1919 Treaty of Versailles after the end of World War I. Its territory of 28 km2 comprised the city of Fiume and rural areas to its north, with a corridor to its west connecting it to Italy, the Shanghai International Settlement was an international zone with its own legal system, postal service, and currency. The Klaipėda Region or Memel Territory was defined by the Treaty of Versailles in 1920 when it was put under the administration of the Council of Ambassadors
5.
Mesopotamia
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In the Iron Age, it was controlled by the Neo-Assyrian and Neo-Babylonian Empires. The Sumerians and Akkadians dominated Mesopotamia from the beginning of history to the fall of Babylon in 539 BC. It fell to Alexander the Great in 332 BC, and after his death, around 150 BC, Mesopotamia was under the control of the Parthian Empire. Mesopotamia became a battleground between the Romans and Parthians, with parts of Mesopotamia coming under ephemeral Roman control. In AD226, eastern part of it fell to the Sassanid Persians, division of Mesopotamia between Roman and Sassanid Empires lasted until the 7th century Muslim conquest of Persia of the Sasanian Empire and Muslim conquest of the Levant from Byzantines. A number of primarily neo-Assyrian and Christian native Mesopotamian states existed between the 1st century BC and 3rd century AD, including Adiabene, Osroene, and Hatra, Mesopotamia is the site of the earliest developments of the Neolithic Revolution from around 10,000 BC. The regional toponym Mesopotamia comes from the ancient Greek root words μέσος middle and ποταμός river and it is used throughout the Greek Septuagint to translate the Hebrew equivalent Naharaim. In the Anabasis, Mesopotamia was used to designate the land east of the Euphrates in north Syria, the Aramaic term biritum/birit narim corresponded to a similar geographical concept. The neighbouring steppes to the west of the Euphrates and the part of the Zagros Mountains are also often included under the wider term Mesopotamia. A further distinction is made between Northern or Upper Mesopotamia and Southern or Lower Mesopotamia. Upper Mesopotamia, also known as the Jazira, is the area between the Euphrates and the Tigris from their sources down to Baghdad, Lower Mesopotamia is the area from Baghdad to the Persian Gulf and includes Kuwait and parts of western Iran. In modern academic usage, the term Mesopotamia often also has a chronological connotation and it is usually used to designate the area until the Muslim conquests, with names like Syria, Jazirah, and Iraq being used to describe the region after that date. It has been argued that these later euphemisms are Eurocentric terms attributed to the region in the midst of various 19th-century Western encroachments, Mesopotamia encompasses the land between the Euphrates and Tigris rivers, both of which have their headwaters in the Armenian Highlands. Both rivers are fed by tributaries, and the entire river system drains a vast mountainous region. Overland routes in Mesopotamia usually follow the Euphrates because the banks of the Tigris are frequently steep and difficult. The climate of the region is semi-arid with a vast desert expanse in the north which gives way to a 15,000 square kilometres region of marshes, lagoons, mud flats, in the extreme south, the Euphrates and the Tigris unite and empty into the Persian Gulf. In the marshlands to the south of the area, a complex water-borne fishing culture has existed since prehistoric times, periodic breakdowns in the cultural system have occurred for a number of reasons. Alternatively, military vulnerability to invasion from marginal hill tribes or nomadic pastoralists has led to periods of trade collapse and these trends have continued to the present day in Iraq
6.
Early Dynastic Period (Mesopotamia)
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The first settlement in southern Mesopotamia was Eridu. The Sumerians claimed that their civilization had been brought, fully formed, to the city of Eridu by their god Enki or by his advisor, Adapa U-an. The first people at Eridu brought with them the Samarran culture from northern Mesopotamia and are identified with the Ubaid period, the Sumerian king list is an ancient text in the Sumerian language listing kings of Sumer, including a few foreign dynasties. The best-known dynasty, that of Lagash, is omitted from the kinglist, dates are approximate, consult particular article for details Uruk III = Jemdet Nasr period Permanent year-round urban settlement may have been prompted by intensive agricultural practices. The work required in maintaining irrigation canals called for, and the surplus food enabled. The centres of Eridu and Uruk, two of the earliest cities, had successively elaborated large temple built of mudbrick. The development and system of administration led to the development of archaic tablets around 3500 BC-3200 BC, while there is no evidence they ever reigned as such, the Sumerians purported them to have lived in the mythical era before the Flood. Throughout its Bronze Age existence, the document evolved into a political tool, the SKL blends prehistorical, presumably mythical pre-dynastic rulers enjoying implausibly lengthy reigns with later, more plausibly historical dynasties. Although the primal kings are historically unattested, this does not preclude their possible correspondence with historical rulers who were later mythicized, some Assyriologists view the predynastic kings as a later fictional addition. Only one ruler listed is known to be female, Kug-Bau, “the tavern-keeper, the earliest listed ruler whose historicity has been archaeologically verified is Enmebaragesi of Kish, c.2600 BCE. Reference to both Enmebaragesi of Kish and his successor in the Epic of Gilgamesh has led to speculation that Gilgamesh himself may have been a king of Uruk. Lagash in particular is directly from archaeological artifacts dating from c.2500 BCE. The SKL is important to the Bronze Age chronology of the ancient near east, however, the fact that many of the dynasties listed reigned simultaneously from varying localities makes it difficult to reproduce a strict linear chronology. The following extant ancient sources contain the SKL, the Apkullu-list, Babyloniaca, Dynastic Chronicle, Scheil dynastic tablet, California Tablet, WB62, the last two sources are a part of the “Weld-Blundell collection” donated by Herbert Weld Blundell to the Ashmolean Museum. WB62 is a clay tablet, inscribed only on the obverse. It is the oldest dated source containing the list, WB444 in contrast is a unique inscribed vertical prism, dated c.1817 BCE, although some scholars prefer c.1827 BCE. The mythological antediluvian section of the SKL has the following entry, shea suggests that Alulim was a contemporary of the Biblical figure Adam (whose name and character may have been derived from Adapa of ancient Mesopotamian religion. In a chart of antediluvian generations in both Babylonian and Biblical traditions, professor William Wolfgang Hallo associated Alulim with Adapa, the earliest known use of the name Adam as a genuine name in historicity is Adamu
7.
Horse
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The horse is one of two extant subspecies of Equus ferus. It is an ungulate mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into the large, humans began to domesticate horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses. There is an extensive, specialized vocabulary used to describe equine-related concepts, covering everything from anatomy to life stages, size, colors, markings, breeds, locomotion, and behavior. Horses anatomy enables them to use of speed to escape predators and they have a well-developed sense of balance. Related to this need to flee from predators in the wild is an unusual trait, female horses, called mares, carry their young for approximately 11 months, and a young horse, called a foal, can stand and run shortly following birth. Most domesticated horses begin training under saddle or in harness between the ages of two and four and they reach full adult development by age five, and have an average lifespan of between 25 and 30 years. There are more than 300 breeds of horse in the world today, horses were historically used in warfare, from which a wide variety of riding and driving techniques developed, using many different styles of equipment and methods of control. Many products are derived from horses, including meat, milk, hide, hair, bone, humans provide domesticated horses with food, water and shelter, as well as attention from specialists such as veterinarians and farriers. Specific terms and specialized language are used to describe equine anatomy, different life stages, colors, depending on breed, management and environment, the modern domestic horse has a life expectancy of 25 to 30 years. Uncommonly, a few animals live into their 40s and, occasionally, the oldest verifiable record was Old Billy, a 19th-century horse that lived to the age of 62. In modern times, Sugar Puff, who had listed in Guinness World Records as the worlds oldest living pony. The exception is in endurance riding, where the age to compete is based on the animals actual calendar age. The following terminology is used to describe horses of various ages, Colt, a common terminology error is to call any young horse a colt, when the term actually only refers to young male horses. Filly, A female horse under the age of four, foal, A horse of either sex less than one year old. A nursing foal is sometimes called a suckling and a foal that has been weaned is called a weanling, most domesticated foals are weaned at five to seven months of age, although foals can be weaned at four months with no adverse physical effects. Gelding, A castrated male horse of any age, mare, A female horse four years old and older
8.
Copper
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Copper is a chemical element with symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with high thermal and electrical conductivity. A freshly exposed surface of copper has a reddish-orange color. Copper is one of the few metals that occur in nature in directly usable metallic form as opposed to needing extraction from an ore and this led to very early human use, from c.8000 BC. Copper used in buildings, usually for roofing, oxidizes to form a green verdigris, Copper is sometimes used in decorative art, both in its elemental metal form and in compounds as pigments. Copper compounds are used as agents, fungicides, and wood preservatives. Copper is essential to all living organisms as a trace dietary mineral because it is a key constituent of the enzyme complex cytochrome c oxidase. In molluscs and crustaceans, copper is a constituent of the blood pigment hemocyanin, replaced by the hemoglobin in fish. In humans, copper is found mainly in the liver, muscle, the adult body contains between 1.4 and 2.1 mg of copper per kilogram of body weight. The filled d-shells in these elements contribute little to interatomic interactions, unlike metals with incomplete d-shells, metallic bonds in copper are lacking a covalent character and are relatively weak. This observation explains the low hardness and high ductility of single crystals of copper, at the macroscopic scale, introduction of extended defects to the crystal lattice, such as grain boundaries, hinders flow of the material under applied stress, thereby increasing its hardness. For this reason, copper is supplied in a fine-grained polycrystalline form. The softness of copper partly explains its high conductivity and high thermal conductivity. The maximum permissible current density of copper in open air is approximately 3. 1×106 A/m2 of cross-sectional area, Copper is one of a few metallic elements with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air, as with other metals, if copper is put in contact with another metal, galvanic corrosion will occur. A green layer of verdigris can often be seen on old structures, such as the roofing of many older buildings. Copper tarnishes when exposed to sulfur compounds, with which it reacts to form various copper sulfides. There are 29 isotopes of copper, 63Cu and 65Cu are stable, with 63Cu comprising approximately 69% of naturally occurring copper, both have a spin of 3⁄2
9.
Tin
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Tin is a chemical element with symbol Sn and atomic number 50. It is a metal in group 14 of the periodic table. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide, Tin shows a chemical similarity to both of its neighbors in group 14, germanium and lead, and has two main oxidation states, +2 and the slightly more stable +4. Tin is the 49th most abundant element and has, with 10 stable isotopes, metallic tin is not easily oxidized in air. The first alloy used on a scale was bronze, made of tin and copper. After 600 BC, pure metallic tin was produced, pewter, which is an alloy of 85–90% tin with the remainder commonly consisting of copper, antimony, and lead, was used for flatware from the Bronze Age until the 20th century. In modern times, tin is used in alloys, most notably tin/lead soft solders. Another large application for tin is corrosion-resistant tin plating of steel, inorganic tin compounds are rather non-toxic. Because of its low toxicity, tin-plated metal was used for packaging as tin cans. However, overexposure to tin may cause problems with metabolizing essential trace elements such as copper and zinc, Tin is a soft, malleable, ductile and highly crystalline silvery-white metal. When a bar of tin is bent, a sound known as the tin cry can be heard from the twinning of the crystals. Tin melts at the low temperature of about 232 °C, the lowest in group 14, the melting point is further lowered to 177.3 °C for 11 nm particles. β-tin, which is stable at and above room temperature, is malleable, in contrast, α-tin, which is stable below 13.2 °C, is brittle. α-tin has a cubic crystal structure, similar to diamond. α-tin has no properties at all because its atoms form a covalent structure in which electrons cannot move freely. It is a dull-gray powdery material with no common uses other than a few specialized semiconductor applications and these two allotropes, α-tin and β-tin, are more commonly known as gray tin and white tin, respectively. Two more allotropes, γ and σ, exist at temperatures above 161 °C, in cold conditions, β-tin tends to transform spontaneously into α-tin, a phenomenon known as tin pest. Commercial grades of tin resist transformation because of the effect of the small amounts of bismuth, antimony, lead
10.
Gemstone
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A gemstone is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks or organic materials that are not minerals are used for jewelry and are therefore often considered to be gemstones as well. Most gemstones are hard, but some soft minerals are used in jewelry because of their luster or other properties that have aesthetic value. Rarity is another characteristic that lends value to a gemstone, apart from jewelry, from earliest antiquity engraved gems and hardstone carvings, such as cups, were major luxury art forms. A gem maker is called a lapidary or gemcutter, a worker is a diamantaire. The carvings of Carl Fabergé are significant works in this tradition, the traditional classification in the West, which goes back to the ancient Greeks, begins with a distinction between precious and semi-precious, similar distinctions are made in other cultures. In modern usage the precious stones are diamond, ruby, sapphire, other stones are classified by their color, translucency and hardness. Another unscientific term for semi-precious gemstones used in art history and archaeology is hardstone, in modern times gemstones are identified by gemologists, who describe gems and their characteristics using technical terminology specific to the field of gemology. The first characteristic a gemologist uses to identify a gemstone is its chemical composition, for example, diamonds are made of carbon and rubies of aluminium oxide. Next, many gems are crystals which are classified by their crystal system such as cubic or trigonal or monoclinic, another term used is habit, the form the gem is usually found in. For example, diamonds, which have a crystal system, are often found as octahedrons. Gemstones are classified into different groups, species, and varieties, for example, ruby is the red variety of the species corundum, while any other color of corundum is considered sapphire. Other examples are the Emerald, aquamarine, red beryl, goshenite, heliodor, and morganite, gems are characterized in terms of refractive index, dispersion, specific gravity, hardness, cleavage, fracture, and luster. They may exhibit pleochroism or double refraction and they may have luminescence and a distinctive absorption spectrum. Material or flaws within a stone may be present as inclusions, gemstones may also be classified in terms of their water. This is a grading of the gems luster, transparency. Very transparent gems are considered first water, while second or third water gems are those of a lesser transparency, there is no universally accepted grading system for gemstones. Diamonds are graded using a system developed by the Gemological Institute of America in the early 1950s, historically, all gemstones were graded using the naked eye
11.
Zanzibar
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Zanzibar is a semi-autonomous part of Tanzania in East Africa. It is composed of the Zanzibar Archipelago in the Indian Ocean, 25–50 kilometres off the coast of the mainland, the capital is Zanzibar City, located on the island of Unguja. Its historic centre is Stone Town, which is a World Heritage Site, the name Zanzibar is apparently derived from the Persian zang-bâr signifying black coast. Zanzibars main industries are spices, raffia, and tourism, in particular, the islands produce cloves, nutmeg, cinnamon, and black pepper. For this reason, the islands, together with Tanzanias Mafia Island, are called the Spice Islands. Zanzibar is the home of the endemic Zanzibar red colobus monkey, the Zanzibar servaline genet, the word Zanzibar came from Arabic Zanjibār, which is in turn from Persian Zang-bār, a compound of Zang + bār. The presence of microlithic tools suggest that it has been home to humans for at least 20,000 years, a Greco-Roman text between the 1st and 3rd centuries AD, the Periplus of the Erythraean Sea, mentioned the island of Menuthias, which is probably Unguja. Little is known about the history of Zanzibar between the time of the Periplus and the death of Muhammad in 632 CE, from that point forward, wars in Asia and increasing trade motivated Persians, Arabs, and Indians to visit or migrate to Zanzibar. Persian traders used Zanzibar as a base for voyages between the Middle East, India, and Africa and they established garrisons on the islands and built the first Zoroastrian fire temples and mosques in the Southern Hemisphere. The impact of these traders and immigrants on the Swahili culture is uncertain, during the Middle Ages, Zanzibar and other settlements on the Swahili Coast were advanced. The littoral contained a number of autonomous trade cities and these towns grew in wealth as the Bantu Swahili people served as intermediaries and facilitators to local, Arab, Persian, Indonesian, Malaysian, Indian, and Chinese merchants. This interaction contributed in part to the evolution of the Swahili culture, although a Bantu language, Swahili as a consequence today includes some elements that were borrowed from other civilizations, particularly Arabic loanwords. With the wealth that they had acquired through trade, some of the Arab traders also became rulers of the coastal cities, vasco da Gamas visit in 1498 marked the beginning of European influence. In 1503 or 1504, Zanzibar became part of the Portuguese Empire when Captain Ruy Lourenço Ravasco Marques landed and demanded and received tribute from the sultan in exchange for peace, Zanzibar remained a possession of Portugal for almost two centuries. It initially became part of the Portuguese province of Arabia and Ethiopia and was administered by a governor general, around 1571, Zanzibar became part of the western division of the Portuguese empire and was administered from Mozambique. It appears, however, that the Portuguese did not closely administer Zanzibar, the first English ship to visit Unguja, the Edward Bonaventure in 1591, found that there was no Portuguese fort or garrison. The extent of their occupation was a depot where produce was purchased and collected for shipment to Mozambique. In other respects, the affairs of the island were managed by the local king and this hands-off approach ended when Portugal established a fort on Pemba around 1635 in response to the Sultan of Mombasas slaughter of Portuguese residents several years earlier
12.
Indus Valley Civilisation
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The Indus Valley Civilisation was a Bronze Age civilisation mainly in the northwestern regions of South Asia, extending from what today is northeast Afghanistan to Pakistan and northwest India. Along with ancient Egypt and Mesopotamia it was one of three early civilisations of the Old World, and of the three, the most widespread, at its peak, the Indus Civilisation may have had a population of over five million. Inhabitants of the ancient Indus river valley developed new techniques in handicraft, the Indus cities are noted for their urban planning, baked brick houses, elaborate drainage systems, water supply systems, and clusters of large non-residential buildings. The discovery of Harappa, and soon afterwards, Mohenjo-Daro, was the culmination of work beginning in 1861 with the founding of the Archaeological Survey of India in the British Raj, excavation of Harappan sites has been ongoing since 1920, with important breakthroughs occurring as recently as 1999. This Harappan civilisation is called the Mature Harappan culture to distinguish it from the cultures immediately preceding and following it. The early Harappan cultures were preceded by local Neolithic agricultural villages, as of 1999, over 1,056 cities and settlements had been found, of which 96 have been excavated, mainly in the general region of the Indus and Ghaggar-Hakra Rivers and their tributaries. Among the settlements were the urban centres of Harappa, Mohenjo-daro, Dholavira, Ganeriwala in Cholistan. The Harappan language is not directly attested and its affiliation is uncertain since the Indus script is still undeciphered, a relationship with the Dravidian or Elamo-Dravidian language family is favoured by a section of scholars. Recently, Indus sites have been discovered in Pakistans northwestern Frontier Province as well, other IVC colonies can be found in Afghanistan while smaller isolated colonies can be found as far away as Turkmenistan and in Maharashtra. The largest number of colonies are in the Punjab, Sindh, Rajasthan, Haryana, Indus Valley sites have been found most often on rivers, but also on the ancient seacoast, for example, Balakot, and on islands, for example, Dholavira. There is evidence of dry river beds overlapping with the Hakra channel in Pakistan, many Indus Valley sites have been discovered along the Ghaggar-Hakra beds. Among them are, Rupar, Rakhigarhi, Sothi, Kalibangan, Harappan Civilisation remains the correct one, according to the common archaeological usage of naming a civilisation after its first findspot. John wrote, I was much exercised in my mind how we were to get ballast for the line of the railway and they were told of an ancient ruined city near the lines, called Brahminabad. Visiting the city, he found it full of hard well-burnt bricks, and, convinced there was a grand quarry for the ballast I wanted. These bricks now provided ballast along 93 miles of the track running from Karachi to Lahore. In 1872–75, Alexander Cunningham published the first Harappan seal and it was half a century later, in 1912, that more Harappan seals were discovered by J. J. H. MacKay, and Marshall. By 1931, much of Mohenjo-Daro had been excavated, but excavations continued, such as that led by Sir Mortimer Wheeler, director of the Archaeological Survey of India in 1944. Among other archaeologists who worked on IVC sites before the independence in 1947 were Ahmad Hasan Dani, Brij Basi Lal, Nani Gopal Majumdar, and Sir Marc Aurel Stein
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