Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, grow from a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from 8.5 millionths of a metre to 33.6 metres and have complex interactions with each other and their environments, forming intricate food webs. The category includes humans, but in colloquial use the term animal refers only to non-human animals; the study of non-human animals is known as zoology. Most living animal species are in the Bilateria, a clade whose members have a bilaterally symmetric body plan; the Bilateria include the protostomes—in which many groups of invertebrates are found, such as nematodes and molluscs—and the deuterostomes, containing the echinoderms and chordates.
Life forms interpreted. Many modern animal phyla became established in the fossil record as marine species during the Cambrian explosion which began around 542 million years ago. 6,331 groups of genes common to all living animals have been identified. Aristotle divided animals into those with those without. Carl Linnaeus created the first hierarchical biological classification for animals in 1758 with his Systema Naturae, which Jean-Baptiste Lamarck expanded into 14 phyla by 1809. In 1874, Ernst Haeckel divided the animal kingdom into the multicellular Metazoa and the Protozoa, single-celled organisms no longer considered animals. In modern times, the biological classification of animals relies on advanced techniques, such as molecular phylogenetics, which are effective at demonstrating the evolutionary relationships between animal taxa. Humans make use of many other animal species for food, including meat and eggs. Dogs have been used in hunting, while many aquatic animals are hunted for sport.
Non-human animals have appeared in art from the earliest times and are featured in mythology and religion. The word "animal" comes from the Latin animalis, having soul or living being; the biological definition includes all members of the kingdom Animalia. In colloquial usage, as a consequence of anthropocentrism, the term animal is sometimes used nonscientifically to refer only to non-human animals. Animals have several characteristics. Animals are eukaryotic and multicellular, unlike bacteria, which are prokaryotic, unlike protists, which are eukaryotic but unicellular. Unlike plants and algae, which produce their own nutrients animals are heterotrophic, feeding on organic material and digesting it internally. With few exceptions, animals breathe oxygen and respire aerobically. All animals are motile during at least part of their life cycle, but some animals, such as sponges, corals and barnacles become sessile; the blastula is a stage in embryonic development, unique to most animals, allowing cells to be differentiated into specialised tissues and organs.
All animals are composed of cells, surrounded by a characteristic extracellular matrix composed of collagen and elastic glycoproteins. During development, the animal extracellular matrix forms a flexible framework upon which cells can move about and be reorganised, making the formation of complex structures possible; this may be calcified, forming structures such as shells and spicules. In contrast, the cells of other multicellular organisms are held in place by cell walls, so develop by progressive growth. Animal cells uniquely possess the cell junctions called tight junctions, gap junctions, desmosomes. With few exceptions—in particular, the sponges and placozoans—animal bodies are differentiated into tissues; these include muscles, which enable locomotion, nerve tissues, which transmit signals and coordinate the body. There is an internal digestive chamber with either one opening or two openings. Nearly all animals make use of some form of sexual reproduction, they produce haploid gametes by meiosis.
These fuse to form zygotes, which develop via mitosis into a hollow sphere, called a blastula. In sponges, blastula larvae swim to a new location, attach to the seabed, develop into a new sponge. In most other groups, the blastula undergoes more complicated rearrangement, it first invaginates to form a gastrula with a digestive chamber and two separate germ layers, an external ectoderm and an internal endoderm. In most cases, a third germ layer, the mesoderm develops between them; these germ layers differentiate to form tissues and organs. Repeated instances of mating with a close relative during sexual reproduction leads to inbreeding depression within a population due to the increased prevalence of harmful recessive traits. Animals have evolved numerous mechanisms for avoiding close inbreeding. In some species, such as the splendid fairywren, females benefit by mating with multiple males, thus producing more offspring of higher genetic quality; some animals are capable of asexual reproduction, which results
Italy the Italian Republic, is a country in Southern Europe. Located in the middle of the Mediterranean Sea, Italy shares open land borders with France, Austria and the enclaved microstates San Marino and Vatican City. Italy covers an area of 301,340 km2 and has a temperate seasonal and Mediterranean climate. With around 61 million inhabitants, it is the fourth-most populous EU member state and the most populous country in Southern Europe. Due to its central geographic location in Southern Europe and the Mediterranean, Italy has been home to a myriad of peoples and cultures. In addition to the various ancient peoples dispersed throughout modern-day Italy, the most famous of which being the Indo-European Italics who gave the peninsula its name, beginning from the classical era and Carthaginians founded colonies in insular Italy and Genoa, Greeks established settlements in the so-called Magna Graecia, while Etruscans and Celts inhabited central and northern Italy respectively; the Italic tribe known as the Latins formed the Roman Kingdom in the 8th century BC, which became a republic with a government of the Senate and the People.
The Roman Republic conquered and assimilated its neighbours on the peninsula, in some cases through the establishment of federations, the Republic expanded and conquered parts of Europe, North Africa and the Middle East. By the first century BC, the Roman Empire emerged as the dominant power in the Mediterranean Basin and became the leading cultural and religious centre of Western civilisation, inaugurating the Pax Romana, a period of more than 200 years during which Italy's technology, economy and literature flourished. Italy remained the metropole of the Roman Empire; the legacy of the Roman Empire endured its fall and can be observed in the global distribution of culture, governments and the Latin script. During the Early Middle Ages, Italy endured sociopolitical collapse and barbarian invasions, but by the 11th century, numerous rival city-states and maritime republics in the northern and central regions of Italy, rose to great prosperity through shipping and banking, laying the groundwork for modern capitalism.
These independent statelets served as Europe's main trading hubs with Asia and the Near East enjoying a greater degree of democracy than the larger feudal monarchies that were consolidating throughout Europe. The Renaissance began in Italy and spread to the rest of Europe, bringing a renewed interest in humanism, science and art. Italian culture flourished, producing famous scholars and polymaths such as Michelangelo, Leonardo da Vinci, Raphael and Machiavelli. During the Middle Ages, Italian explorers such as Marco Polo, Christopher Columbus, Amerigo Vespucci, John Cabot and Giovanni da Verrazzano discovered new routes to the Far East and the New World, helping to usher in the European Age of Discovery. Italy's commercial and political power waned with the opening of trade routes that bypassed the Mediterranean. Centuries of infighting between the Italian city-states, such as the Italian Wars of the 15th and 16th centuries, left the region fragmented, it was subsequently conquered and further divided by European powers such as France and Austria.
By the mid-19th century, rising Italian nationalism and calls for independence from foreign control led to a period of revolutionary political upheaval. After centuries of foreign domination and political division, Italy was entirely unified in 1871, establishing the Kingdom of Italy as a great power. From the late 19th century to the early 20th century, Italy industrialised, namely in the north, acquired a colonial empire, while the south remained impoverished and excluded from industrialisation, fuelling a large and influential diaspora. Despite being one of the main victors in World War I, Italy entered a period of economic crisis and social turmoil, leading to the rise of a fascist dictatorship in 1922. Participation in World War II on the Axis side ended in military defeat, economic destruction and the Italian Civil War. Following the liberation of Italy and the rise of the resistance, the country abolished the monarchy, reinstated democracy, enjoyed a prolonged economic boom and, despite periods of sociopolitical turmoil became a developed country.
Today, Italy is considered to be one of the world's most culturally and economically advanced countries, with the sixth-largest worldwide national wealth. Its advanced economy ranks eighth-largest in the world and third in the Eurozone by nominal GDP. Italy owns the third-largest central bank gold reserve, it has a high level of human development, it stands among the top countries for life expectancy. The country plays a prominent role in regional and global economic, military and diplomatic affairs. Italy is a founding and leading member of the European Union and a member of numerous international institutions, including the UN, NATO, the OECD, the OSCE, the WTO, the G7, the G20, the Union for the Mediterranean, the Council of Europe, Uniting for Consensus, the Schengen Area and many more; as a reflection
Humans are the only extant members of the subtribe Hominina. Together with chimpanzees and orangutans, they are part of the family Hominidae. A terrestrial animal, humans are characterized by their erect bipedal locomotion. Early hominins—particularly the australopithecines, whose brains and anatomy are in many ways more similar to ancestral non-human apes—are less referred to as "human" than hominins of the genus Homo. Several of these hominins used fire, occupied much of Eurasia, gave rise to anatomically modern Homo sapiens in Africa about 315,000 years ago. Humans began to exhibit evidence of behavioral modernity around 50,000 years ago, in several waves of migration, they ventured out of Africa and populated most of the world; the spread of the large and increasing population of humans has profoundly affected much of the biosphere and millions of species worldwide. Advantages that explain this evolutionary success include a larger brain with a well-developed neocortex, prefrontal cortex and temporal lobes, which enable advanced abstract reasoning, problem solving and culture through social learning.
Humans use tools better than any other animal. Humans uniquely use such systems of symbolic communication as language and art to express themselves and exchange ideas, organize themselves into purposeful groups. Humans create complex social structures composed of many cooperating and competing groups, from families and kinship networks to political states. Social interactions between humans have established an wide variety of values, social norms, rituals, which together undergird human society. Curiosity and the human desire to understand and influence the environment and to explain and manipulate phenomena have motivated humanity's development of science, mythology, religion and numerous other fields of knowledge. Though most of human existence has been sustained by hunting and gathering in band societies many human societies transitioned to sedentary agriculture some 10,000 years ago, domesticating plants and animals, thus enabling the growth of civilization; these human societies subsequently expanded, establishing various forms of government and culture around the world, unifying people within regions to form states and empires.
The rapid advancement of scientific and medical understanding in the 19th and 20th centuries permitted the development of fuel-driven technologies and increased lifespans, causing the human population to rise exponentially. The global human population was estimated to be near 7.7 billion in 2015. In common usage, the word "human" refers to the only extant species of the genus Homo—anatomically and behaviorally modern Homo sapiens. In scientific terms, the meanings of "hominid" and "hominin" have changed during the recent decades with advances in the discovery and study of the fossil ancestors of modern humans; the clear boundary between humans and apes has blurred, resulting in now acknowledging the hominids as encompassing multiple species, Homo and close relatives since the split from chimpanzees as the only hominins. There is a distinction between anatomically modern humans and Archaic Homo sapiens, the earliest fossil members of the species; the English adjective human is a Middle English loanword from Old French humain from Latin hūmānus, the adjective form of homō "man."
The word's use as a noun dates to the 16th century. The native English term man can refer to the species as well as to human males, or individuals of either sex; the species binomial "Homo sapiens" was coined by Carl Linnaeus in his 18th-century work Systema Naturae. The generic name "Homo" is a learned 18th-century derivation from Latin homō "man," "earthly being"; the species-name "sapiens" means "wise" or "sapient". Note that the Latin word homo refers to humans of either gender, that "sapiens" is the singular form; the genus Homo evolved and diverged from other hominins in Africa, after the human clade split from the chimpanzee lineage of the hominids branch of the primates. Modern humans, defined as the species Homo sapiens or to the single extant subspecies Homo sapiens sapiens, proceeded to colonize all the continents and larger islands, arriving in Eurasia 125,000–60,000 years ago, Australia around 40,000 years ago, the Americas around 15,000 years ago, remote islands such as Hawaii, Easter Island and New Zealand between the years 300 and 1280.
The closest living relatives of humans are gorillas. With the sequencing of the human and chimpanzee genomes, current estimates of similarity between human and chimpanzee DNA sequences range between 95% and 99%. By using the technique called a molecular clock which estimates the time required for the number of divergent mutations to accumulate between two lineages, the approximate date for the split between lineages can be calculated; the gibbons and orangutans were the first groups to split from the line leading to the h
An illuminated manuscript is a manuscript in which the text is supplemented with such decoration as initials and miniature illustrations. In the strictest definition, the term refers only to manuscripts decorated with either gold or silver. Comparable Far Eastern and Mesoamerican works are described as painted. Islamic manuscripts may be referred to as illuminated, illustrated or painted, though using the same techniques as Western works; the earliest extant substantive illuminated manuscripts are from the period 400 to 600, produced in the Kingdom of the Ostrogoths and the Eastern Roman Empire. Their significance lies not only in their inherent artistic and historical value, but in the maintenance of a link of literacy offered by non-illuminated texts. Had it not been for the monastic scribes of Late Antiquity, most literature of Greece and Rome would have perished; as it was, the patterns of textual survivals were shaped by their usefulness to the constricted literate group of Christians. Illumination of manuscripts, as a way of aggrandizing ancient documents, aided their preservation and informative value in an era when new ruling classes were no longer literate, at least in the language used in the manuscripts.
The majority of extant manuscripts are from the Middle Ages, although many survive from the Renaissance, along with a limited number from Late Antiquity. The majority are of a religious nature. From the 13th century onward, an increasing number of secular texts were illuminated. Most illuminated manuscripts were created as codices. A few illuminated fragments survive on papyrus, which does not last nearly as long as parchment. Most medieval manuscripts, illuminated or not, were written on parchment, but most manuscripts important enough to illuminate were written on the best quality of parchment, called vellum. Beginning in the Late Middle Ages, manuscripts began to be produced on paper. Early printed books were sometimes produced with spaces left for rubrics and miniatures, or were given illuminated initials, or decorations in the margin, but the introduction of printing led to the decline of illumination. Illuminated manuscripts continued to be produced in the early 16th century but in much smaller numbers for the wealthy.
They are among the most common items to survive from the Middle Ages. They are the best surviving specimens of medieval painting, the best preserved. Indeed, for many areas and time periods, they are the only surviving examples of painting. Art historians classify illuminated manuscripts into their historic periods and types, including Late Antique, Carolingian manuscripts, Ottonian manuscripts, Romanesque manuscripts, Gothic manuscripts, Renaissance manuscripts. There are a few examples from periods; the type of book most heavily and richly illuminated, sometimes known as a "display book", varied between periods. In the first millennium, these were most to be Gospel Books, such as the Lindisfarne Gospels and the Book of Kells; the Romanesque period saw the creation of many large illuminated complete Bibles – one in Sweden requires three librarians to lift it. Many Psalters were heavily illuminated in both this and the Gothic period. Single cards or posters of vellum, leather or paper were in wider circulation with short stories or legends on them about the lives of saints, chivalry knights or other mythological figures criminal, social or miraculous occurrences.
The Book of Hours commonly the personal devotional book of a wealthy layperson, was richly illuminated in the Gothic period. Other books, both liturgical and not, continued to be illuminated at all periods; the Byzantine world produced manuscripts in its own style, versions of which spread to other Orthodox and Eastern Christian areas. The Muslim World and in particular the Iberian Peninsula, with their traditions of literacy uninterrupted by the Middle Ages, were instrumental in delivering ancient classic works to the growing intellectual circles and universities of Western Europe all through the 12th century, as books were produced there in large numbers and on paper for the first time in Europe, with them full treatises on the sciences astrology and medicine where illumination was required to have profuse and accurate representations with the text; the Gothic period, which saw an increase in the production of these artifacts saw more secular works such as chronicles and works of literature illuminated.
Wealthy people began to build up personal libraries. Up to the 12th century, most manuscripts were produced in monasteries in order to add to the library or after receiving a commission from a wealthy patron. Larger monasteries contained separate areas for the monks who specialized in the production of manuscripts called a scriptorium. Within the walls of a scriptorium were individualized areas where a monk could sit and work on a manuscript without being disturbed by his fellow brethren. If no scriptorium was available “separate little rooms were assigned to book copying.
A high cross or standing cross is a free-standing Christian cross made of stone and richly decorated. There was a unique Early Medieval tradition in Ireland and Britain of raising large sculpted stone crosses outdoors; these developed from earlier traditions using wood with metalwork attachments, earlier pagan Celtic memorial stones. The earliest surviving examples seem to come from the territory of the Anglo-Saxon kingdom of Northumbria, converted to Christianity by Irish missionaries, their relief decoration is a mixture of religious figures and sections of decoration such as knotwork, interlace and in Britain vine-scrolls, all in the styles found in insular art in other media such as illuminated manuscripts and metalwork. They were normally painted over a modelled layer of plaster; the earlier crosses were up to about two metres or eight feet high, but in Ireland examples up to three times higher appear retaining thick massive proportions, giving large surface areas for carving. The tallest of the Irish crosses is Muiredach's High Cross.
It stands at twenty-two feet high. Anglo-Saxon examples remained slender in comparison, but could be large; the crosses though not always, feature a stone ring around the intersection, forming a Celtic cross. The term "high cross" is used in Ireland and Scotland, but the tradition across Britain and Ireland is a single phenomenon, though there are strong regional variations; some crosses were erected just outside monasteries. Whether they were used as "preaching crosses" at early dates is unclear, many crosses have been moved to their present locations, they do not seem to have been used as grave-markers in the early medieval period. In the 19th century Celtic Revival Celtic crosses, with decoration in a form of insular style, became popular as gravestones and memorials, are now found in many parts of the world. Unlike the Irish originals, the decoration does not include figures. High crosses are the primary surviving monumental works of Insular art, the largest number in Britain survive from areas that remained under Celtic Christianity until late.
No examples, or traces, of the putative earlier forms in wood or with metal attachments have survived. Saint Adomnán, Abbot of Iona who died in 704, mentions similar free standing ringed wooden crosses replaced by stone versions; the earliest surviving free-standing stone crosses are at Carndonagh, which appear to be erected by missionaries from Iona. Fleeing the Viking raiders, "giving Iona a critical role in the formation of ringed crosses"; the round bosses seen on early crosses derive from Pictish stones. High crosses may exist from the 7th century in Northumbria, which included much of south-east Scotland, Ireland, though Irish dates are being moved later; however the dates assigned to most of the early crosses surviving in good condition, whether at Ruthwell and Bewcastle, the Western Ossory group in Ireland, Iona or the Kildalton Cross on Islay, have all shown a tendency to converge on the period around or before 800, despite the differences between the Northumbrian and Celtic types. The high cross spread to the rest of the British Isles, including the Celtic areas of Wales, Devon and Cornwall, where ogham inscriptions indicate an Irish presence, some examples can be found on Continental Europe where the style was taken by Insular missionaries.
Most Irish High crosses have the distinctive shape of the ringed Celtic cross, they are larger and more massive, feature more figural decoration than those elsewhere. They have more survived as well; the ring served to strengthen the head and the arms of the high cross, but it soon became a decorative feature as well. The high crosses were status symbols, either for a monastery or for a sponsor or patron, preaching crosses, may have had other functions; some have inscriptions recording the donor who commissioned them, like Muiredach's High Cross and the Bewcastle Cross. The earliest 8th- or 9th-century Irish crosses had only ornament, including interlace and round bosses, but from the 9th and 10th century, figurative images appear, sometimes just a figure of Christ crucified in the centre, but in the largest 10th century examples large numbers of figures over much of the surface; some late Irish examples have fewer figures, approaching life-size, carved in high relief. The Irish tradition died out after the 12th century, until the 19th-century Celtic Revival, when the Celtic cross form saw a lasting revival for gravestones and memorials just using ornamental decoration and inscriptions
Islamic art encompasses the visual arts produced in the Islamic world. Islamic art is difficult to characterize because it covers a wide range of lands and genres, including Islamic architecture, Islamic calligraphy, Islamic miniature, Islamic glass, Islamic pottery, textile arts such as carpets and embroidery. Islamic art comprises both religious and secular art forms. Religious art is represented by calligraphy and furnishings of religious buildings, such as mosque fittings and carpets. Secular artistic production flourished in the Islamic world, although some of its elements were criticized by religious scholars. Early development of Islamic art was influenced by Roman art, Early Christian art, Sassanian art, with influences from Central Asian nomadic traditions. Chinese art had a formative influence on Islamic painting and textiles. Though the concept of "Islamic art" has been criticised by some modern art historians as an illusory Eurocentric construct, the similarities between art produced at different times and places in the Islamic world in the Islamic Golden Age, have been sufficient to keep the term in wide use by scholars.
Islamic art is characterized by recurrent motifs, such as the use of geometrical floral or vegetal designs in a repetition known as the arabesque. The arabesque in Islamic art is used to symbolize the transcendent and infinite nature of God. Mistakes in repetitions may be intentionally introduced as a show of humility by artists who believe only God can produce perfection, although this theory is disputed; some interpretations of Islam include a ban of depiction of animate beings known as aniconism. Islamic aniconism stems in part from the prohibition of idolatry and in part from the belief that creation of living forms is God's prerogative. Muslims have interpreted these prohibitions in different ways in different places. Religious Islamic art has been characterized by the absence of figures and extensive use of calligraphic and abstract floral patterns. However, representations of Islamic religious figures are found in some manuscripts from Persianate cultures, including Ottoman Turkey and Mughal India.
These pictures were meant to illustrate the story and not to infringe on the Islamic prohibition of idolatry, but many Muslims regard such images as forbidden. In secular art of the Muslim world, representations of human and animal forms flourished in nearly all Islamic cultures, although because of opposing religious sentiments, figures in paintings were stylized, giving rise to a variety of decorative figural designs. Calligraphic design is omnipresent in Islamic art, where, as in Europe in the Middle Ages, religious exhortations, including Qur'anic verses, may be included in secular objects coins and metalwork, most painted miniatures include some script, as do many buildings. Use of Islamic calligraphy in architecture extended outside of Islamic territories. Other inscriptions include verses of poetry, inscriptions recording ownership or donation. Two of the main scripts involved are the symbolic kufic and naskh scripts, which can be found adorning and enhancing the visual appeal of the walls and domes of buildings, the sides of minbars, metalwork.
Islamic calligraphy in the form of painting or sculptures are sometimes referred to as quranic art. East Persian pottery from the 9th to 11th centuries decorated only with stylised inscriptions, called "epigraphic ware", has been described as "probably the most refined and sensitive of all Persian pottery". Large inscriptions made from tiles, sometimes with the letters raised in relief, or the background cut away, are found on the interiors and exteriors of many important buildings. Complex carved calligraphy decorates buildings. For most of the Islamic period the majority of coins only showed lettering, which are very elegant despite their small size and nature of production; the tughra or monogram of an Ottoman sultan was used extensively on official documents, with elaborate decoration for important ones. Other single sheets of calligraphy, designed for albums, might contain short poems, Qur'anic verses, or other texts; the main languages, all using Arabic script, are Arabic, always used for Qur'anic verses, Persian in the Persianate world for poetry, Turkish, with Urdu appearing in centuries.
Calligraphers had a higher status than other artists. Although there has been a tradition of wall-paintings in the Persianate world, the best-surviving and highest developed form of painting in the Islamic world is the miniature in illuminated manuscripts, or as a single page for inclusion in a muraqqa or bound album of miniatures and calligraphy; the tradition of the Persian miniature has been dominant since about the 13th century influencing the Ottoman miniature of Turkey and the Mughal miniature in India. Miniatures were an art of the court, because they were not seen in public, it has been argued that constraints on the depiction of the human figure were much more relaxed, indeed miniatures contain great numbers of small figures, from the 16th century portraits of single ones. Although surviving early examples are now uncommon, human figurative art was a continuous tradition in Islamic lands in secular contexts, notably several of the Umayyad Desert Castles, during the Abbasid Caliphate.
The largest commissions of illustrated books were classics of Persian poetry such a
The Celts are an Indo-European ethnolinguistic group of Europe identified by their use of Celtic languages and cultural similarities. The history of pre-Celtic Europe and the exact relationship between ethnic and cultural factors in the Celtic world remains uncertain and controversial; the exact geographic spread of the ancient Celts is disputed. According to one theory, the common root of the Celtic languages, the Proto-Celtic language, arose in the Late Bronze Age Urnfield culture of Central Europe, which flourished from around 1200 BC. According to a theory proposed in the 19th century, the first people to adopt cultural characteristics regarded as Celtic were the people of the Iron Age Hallstatt culture in central Europe, named for the rich grave finds in Hallstatt, Austria, thus this area is sometimes called the "Celtic homeland". By or during the La Tène period, this Celtic culture was supposed to have expanded by trans-cultural diffusion or migration to the British Isles and the Low Countries, Bohemia and much of Central Europe, the Iberian Peninsula and northern Italy and, following the Celtic settlement of Eastern Europe beginning in 279 BC, as far east as central Anatolia in modern-day Turkey.
The earliest undisputed direct examples of a Celtic language are the Lepontic inscriptions beginning in the 6th century BC. Continental Celtic languages are attested exclusively through inscriptions and place-names. Insular Celtic languages are attested beginning around the 4th century in Ogham inscriptions, although they were being spoken much earlier. Celtic literary tradition begins with Old Irish texts around the 8th century CE. Coherent texts of Early Irish literature, such as the Táin Bó Cúailnge, survive in 12th-century recensions. By the mid-1st millennium, with the expansion of the Roman Empire and migrating Germanic tribes, Celtic culture and Insular Celtic languages had become restricted to Ireland, the western and northern parts of Great Britain, the Isle of Man, Brittany. Between the 5th and 8th centuries, the Celtic-speaking communities in these Atlantic regions emerged as a reasonably cohesive cultural entity, they had a common linguistic and artistic heritage that distinguished them from the culture of the surrounding polities.
By the 6th century, the Continental Celtic languages were no longer in wide use. Insular Celtic culture diversified into that of the Gaels and the Celtic Britons of the medieval and modern periods. A modern Celtic identity was constructed as part of the Romanticist Celtic Revival in Great Britain and other European territories, such as Portugal and Spanish Galicia. Today, Scottish Gaelic and Breton are still spoken in parts of their historical territories, Cornish and Manx are undergoing a revival; the first recorded use of the name of Celts – as Κελτοί – to refer to an ethnic group was by Hecataeus of Miletus, the Greek geographer, in 517 BC, when writing about a people living near Massilia. In the fifth century BC, Herodotus referred to Keltoi living around the head of the Danube and in the far west of Europe; the etymology of the term Keltoi is unclear. Possible roots include Indo-European *kʲel'to hide', IE *kʲel'to heat' or *kel'to impel'. Several authors have supposed it to be Celtic in origin, while others view it as a name coined by Greeks.
Linguist Patrizia De Bernardo Stempel falls in the latter group, suggests the meaning "the tall ones". In the 1st century BC, Julius Caesar reported that the people known to the Romans as Gauls called themselves Celts, which suggests that if the name Keltoi was bestowed by the Greeks, it had been adopted to some extent as a collective name by the tribes of Gaul; the geographer Strabo, writing about Gaul towards the end of the first century BC, refers to the "race, now called both Gallic and Galatic," though he uses the term Celtica as a synonym for Gaul, separated from Iberia by the Pyrenees. Yet he reports Celtic peoples in Iberia, uses the ethnic names Celtiberi and Celtici for peoples there, as distinct from Lusitani and Iberi. Pliny the Elder cited the use of Celtici in Lusitania as a tribal surname, which epigraphic findings have confirmed. Latin Gallus might stem from a Celtic ethnic or tribal name perhaps one borrowed into Latin during the Celtic expansions into Italy during the early fifth century BC.
Its root may be the Proto-Celtic *galno, meaning "power, strength", hence Old Irish gal "boldness, ferocity" and Welsh gallu "to be able, power". The tribal names of Gallaeci and the Greek Γαλάται most have the same origin; the suffix -atai might be an Ancient Greek inflection. Classical writers did not apply the terms Κελτοί or Celtae to the inhabitants of Britain or Ireland, which has led to some scholars preferring not to use the term for the Iron Age inhabitants of those islands. Celt is a modern English word, first attested in 1707, in the writing of Edward Lhuyd, whose work, along with that of other late 17th-century scholars, brought academic attention to the languages and history of the early Celtic inhabitants of Great Britain; the English form Gaul (first recorded in the 17th cent