1.
City
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A city is a large and permanent human settlement. Cities generally have complex systems for sanitation, utilities, land usage, housing, a big city or metropolis usually has associated suburbs and exurbs. Such cities are associated with metropolitan areas and urban areas. Once a city expands far enough to another city, this region can be deemed a conurbation or megalopolis. Damascus is arguably the oldest city in the world, in terms of population, the largest city proper is Shanghai, while the fastest-growing is Dubai. There is not enough evidence to assert what conditions gave rise to the first cities, some theorists have speculated on what they consider suitable pre-conditions and basic mechanisms that might have been important driving forces. The conventional view holds that cities first formed after the Neolithic revolution, the Neolithic revolution brought agriculture, which made denser human populations possible, thereby supporting city development. The advent of farming encouraged hunter-gatherers to abandon nomadic lifestyles and to settle near others who lived by agricultural production, the increased population density encouraged by farming and the increased output of food per unit of land created conditions that seem more suitable for city-like activities. In his book, Cities and Economic Development, Paul Bairoch takes up position in his argument that agricultural activity appears necessary before true cities can form. According to Vere Gordon Childe, for a settlement to qualify as a city, it must have enough surplus of raw materials to support trade and a relatively large population. To illustrate this point, Bairoch offers an example, Western Europe during the pre-Neolithic, when the cost of transport is taken into account, the figure rises to 200,000 square kilometres. Bairoch noted that this is roughly the size of Great Britain, the urban theorist Jane Jacobs suggests that city formation preceded the birth of agriculture, but this view is not widely accepted. In his book City Economics, Brendan OFlaherty asserts Cities could persist—as they have for thousands of years—only if their advantages offset the disadvantages, OFlaherty illustrates two similar attracting advantages known as increasing returns to scale and economies of scale, which are concepts usually associated with businesses. Their applications are seen in more basic economic systems as well, increasing returns to scale occurs when doubling all inputs more than doubles the output an activity has economies of scale if doubling output less than doubles cost. To offer an example of these concepts, OFlaherty makes use of one of the oldest reasons why cities were built, in this example, the inputs are anything that would be used for protection and the output is the area protected and everything of value contained in it. OFlaherty then asks that we suppose the protected area is square, the advantage is expressed as, O = s 2, where O is the output and s stands for the length of a side. This equation shows that output is proportional to the square of the length of a side, the inputs depend on the length of the perimeter, I =4 s, where I stands for the quantity of inputs. So there are increasing returns to scale, O = I2 /16 and this equation shows that with twice the inputs, you produce quadruple the output
2.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
3.
India
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India, officially the Republic of India, is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and it is bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast. It shares land borders with Pakistan to the west, China, Nepal, and Bhutan to the northeast, in the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives. Indias Andaman and Nicobar Islands share a border with Thailand. The Indian subcontinent was home to the urban Indus Valley Civilisation of the 3rd millennium BCE, in the following millennium, the oldest scriptures associated with Hinduism began to be composed. Social stratification, based on caste, emerged in the first millennium BCE, early political consolidations took place under the Maurya and Gupta empires, the later peninsular Middle Kingdoms influenced cultures as far as southeast Asia. In the medieval era, Judaism, Zoroastrianism, Christianity, and Islam arrived, much of the north fell to the Delhi sultanate, the south was united under the Vijayanagara Empire. The economy expanded in the 17th century in the Mughal empire, in the mid-18th century, the subcontinent came under British East India Company rule, and in the mid-19th under British crown rule. A nationalist movement emerged in the late 19th century, which later, under Mahatma Gandhi, was noted for nonviolent resistance, in 2015, the Indian economy was the worlds seventh largest by nominal GDP and third largest by purchasing power parity. Following market-based economic reforms in 1991, India became one of the major economies and is considered a newly industrialised country. However, it continues to face the challenges of poverty, corruption, malnutrition, a nuclear weapons state and regional power, it has the third largest standing army in the world and ranks sixth in military expenditure among nations. India is a constitutional republic governed under a parliamentary system. It is a pluralistic, multilingual and multi-ethnic society and is home to a diversity of wildlife in a variety of protected habitats. The name India is derived from Indus, which originates from the Old Persian word Hindu, the latter term stems from the Sanskrit word Sindhu, which was the historical local appellation for the Indus River. The ancient Greeks referred to the Indians as Indoi, which translates as The people of the Indus, the geographical term Bharat, which is recognised by the Constitution of India as an official name for the country, is used by many Indian languages in its variations. Scholars believe it to be named after the Vedic tribe of Bharatas in the second millennium B. C. E and it is also traditionally associated with the rule of the legendary emperor Bharata. Gaṇarājya is the Sanskrit/Hindi term for republic dating back to the ancient times, hindustan is a Persian name for India dating back to the 3rd century B. C. E. It was introduced into India by the Mughals and widely used since then and its meaning varied, referring to a region that encompassed northern India and Pakistan or India in its entirety
4.
States and union territories of India
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India is a federal union comprising twenty-nine states and seven union territories. The states and union territories are further subdivided into districts and further into smaller administrative divisions, the Constitution of India distributes the sovereign executive and legislative powers exercisable with respect to the territory of any State between the Union and that State. The Indian subcontinent has been ruled by different ethnic groups throughout its history. Between 1947 and 1950, the territories of the states were politically integrated into the Indian Union. The new Constitution of India, which came into force on 26 January 1950, the new republic was also declared to be a Union of States. The nine Part A states were Assam, Bihar, Bombay, Madhya Pradesh, Madras, Orissa, Punjab, Uttar Pradesh, and West Bengal. The eight Part B states were former princely states or groups of states, governed by a rajpramukh, who was usually the ruler of a constituent state. The rajpramukh was appointed by the President of India, the Part B states were Hyderabad, Jammu and Kashmir, Madhya Bharat, Mysore, Patiala and East Punjab States Union, Rajasthan, Saurashtra, and Travancore-Cochin. The ten Part C states included both the former chief commissioners provinces and some states, and each was governed by a chief commissioner appointed by the President of India. The Part C states were Ajmer, Bhopal, Bilaspur, Coorg, Delhi, Himachal Pradesh, Cutch, Manipur, Tripura, the only Part D state was the Andaman and Nicobar Islands, which were administered by a lieutenant governor appointed by the central government. The Union Territory of Puducherry was created in 1954 comprising the previous French enclaves of Pondichéry, Karaikal, Yanam, Andhra State was created on 1 October 1953 from the Telugu-speaking northern districts of Madras State. The States Reorganisation Act of 1956 reorganised the states based on linguistic lines resulting in the creation of the new states, as a result of this act, Madras State retained its name with Kanyakumari district added to from Travancore-Cochin. Andhra Pradesh was created with the merger of Andhra State with the Telugu-speaking districts of Hyderabad State in 1956, kerala was created with the merger of Malabar district and the Kasaragod taluk of South Canara districts of Madras State with Travancore-Cochin. The Laccadive Islands which were divided between South Canara and Malabar districts of Madras State were united and organised into the territory of Lakshadweep. Bombay State was enlarged by the addition of Saurashtra State and Kutch State, Rajasthan and Punjab gained territories from Ajmer and Patiala and East Punjab States Union respectively and certain territories of Bihar was transferred to West Bengal. Bombay State was split into the states of Gujarat and Maharashtra on 1 May 1960 by the Bombay Reorganisation Act. Nagaland was formed on 1 December 1963, the Punjab Reorganisation Act of 1966 resulted in the creation of Haryana on 1 November and the transfer of the northern districts of Punjab to Himachal Pradesh. The act also designated Chandigarh as a territory and the shared capital of Punjab
5.
Andhra Pradesh
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Andhra Pradesh is one of the 29 states of India, situated on the southeastern coast of the country. The state is the eighth largest state in India covering an area of 162,968 km2, as per 2011 Census of India, the state is tenth largest by population with 49,386,799 inhabitants. On 2 June 2014, the portion of the state was bifurcated to form a new state of Telangana. In accordance with the Andhra Pradesh Reorganisation Act,2014, Hyderabad will remain the de jure capital of both Andhra Pradesh and Telangana states for a period of not exceeding 10 years. The new riverfront proposed capital in Guntur district is Amaravati, which is under the jurisdiction of APCRDA, the Gross State Domestic Product of the state in the 2016–2017 financial year at current prices stood at ₹6,800.3 billion. The state has a coastline of 974 km with jurisdiction over nearly 15,000 km2 territorial waters, the second longest among all the states of India after Gujarat. It is bordered by Telangana in the north-west, Chhattisgarh in the north, Odisha in the north-east, Karnataka in the west, Tamil Nadu in the south and the water body of Bay of Bengal in the east. A small enclave of 30 km2 of Yanam, a district of Puducherry, Andhra Pradesh is composed of two regions, Coastal Andhra, located along the Bay of Bengal, and Rayalaseema, in the inland southwestern part of the state. These two regions comprise 13 districts, with 9 in Coastal Andhra and 4 in Rayalaseema, Andhra Pradesh hosted 121.8 million visitors in 2015, a 30% growth in tourist arrivals over the previous year. The Tirumala Venkateswara Temple in Tirupati is one of the worlds most visited religious sites, a tribe named Andhra has been mentioned in the Sanskrit texts such as Aitareya Brahmana. According to Aitareya Brahmana of the Rig Veda, the Andhras left north India, archaeological evidence from places such as Amaravati, Dharanikota and Vaddamanu suggests that the Andhra region was part of the Mauryan Empire. Amaravati might have been a centre for the Mauryan rule. After the death of emperor Ashoka, the Mauryan rule weakened around 200 BCE, the Satavahana dynasty dominated the Deccan region from the 1st century BCE to the 3rd century CE. The Satavahanas have been mentioned by the names Andhra, Andhrara-jatiya and Andhra-bhrtya in the Puranic literature, Dharanikota along with Amaravathi was the capital of the later Satavahanas. Amaravathi became a trade and pilgrimage centre during the Satavahana rule. According to the Buddhist tradition, Nagarjuna lived here, possibly in second, Andhra Ikshvakus were one of the earliest recorded ruling dynasties of the Guntur-Krishna regions of Andhra Pradesh. They ruled the eastern Andhra country along the Krishna river during the half of the second century CE. Puranas called Andhra Ikshvakus Shri Parvatiya Andhras, archaeological evidence has suggested that the Andhra Ikshvakus immediately succeeded the Satavahanas in the Krishna river valley
6.
Guntur district
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Guntur district is an administrative district in the Coastal Andhra region of the Indian state of Andhra Pradesh. The administrative seat of the district is located at Guntur, the largest city of the district in terms of area and population. It has a coastline of approximately 100 km and is situated on the bank of Krishna River. It is bounded on the south by Prakasam district and on the west by the state of Telangana. It has an area of 11,391 km2 and is the 2nd most populous district in the state a population of 4,889,230 as per 2011 census of India, the district is a major centre for agriculture, education and learning. It exports large quantities of chillies and tobacco, Amaravati, the proposed capital of Andhra Pradesh is situated in Guntur district, on the banks of River Krishna. There are several opinions on the meaning and origin of the word Guntur, in Sanskrit, Guntur was called Garthapuri. The original Sanskrit name for Guntur was Garthapuri, the Agasthyeswara Sivalayam in the old city of Guntur is an ancient temple for Siva. It has inscriptions on two stones in Naga Lipi and it is said that Agastya built the temple in the last Treta-Yuga around the Swayambhu Linga and hence the name. The Nagas were said to have ruled the region, the place of Sitanagaram and the Guthikonda Caves can be traced back to the last Treta-Yuga and Dwapara-Yuga. Guntur District is home to the second oldest evidence of habitation in India. Ancient history can be traced from the time of Sala kings who ruled during the 5th century BCE, the earliest reference to Guntur, a variant of Guntur, comes from the Idern plates of Ammaraja I, the Vengi Chalukyan King. Guntur also appears in two inscriptions dated 1147 and 1158 CE, since the beginning of Buddhist time, Guntur stood in the forefront in matters of culture, education and civilisation. Gautama Buddha preached at Dharanikota/Dhanyakatakam near Guntur and conducted Kalachakra ceremony, buddhists established universities in ancient times at Dhanyakataka and Amaravathi. Scores of Buddhist stupas were excavated in the villages of Guntur district, Acharya Nagarjuna, an influential Buddhist philosopher taught at Nagarjunakonda and is said to have discovered Mica in 200 BCE. Chinese traveller and Buddhist monk Hiuen Tsang visited Amaravati in 640 C. E. stayed for sometime and he observed that there were many Viharas and some of them were deserted, which points out that Hinduism was gaining ground at that time. Xuanzang wrote an account of the place, Viharas and monasteries that existed. The famous battle of Palnadu which is enshrined in legend and literature as Palnati Yuddham was fought in Guntur district in 1180 CE
7.
Telugu language
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Telugu is a Dravidian language native to India. It is also spoken by significant minorities in Karnataka, Tamil Nadu, Maharashtra, Chhattisgarh, Odisha, the Andaman and Nicobar Islands and it is one of six languages designated a classical language of India by the Government of India. Telugu ranks third by the number of speakers in India. It is one of the scheduled languages of the Republic of India. Approximately 10,000 inscriptions exist in the Telugu language, the speakers of the language call it Telugu or Tenugu. The older forms of the name include Teluṅgu, Tenuṅgu and Teliṅga, the etymology of Telugu is not certain. Some historical scholars have suggested a derivation from Sanskrit triliṅgam, as in Trilinga Desa, tradition holds that Shiva descended as a lingam on three mountains, Kaleshwaram, Srisailam, and Bhimeswaram, which are said to have marked the boundaries of the Trilinga Desa. Atharvana Acharya in the 13th century wrote a grammar of Telugu, Appa Kavi in the 17th century explicitly wrote that Telugu was derived from Trilinga. Scholar Charles P. Brown comments that it was a strange notion as all the predecessors of Appa Kavi had no knowledge of such a derivation. George Abraham Grierson and other linguists doubt this derivation, holding rather that Telugu was the older term, another view holds that tenugu is derived from the proto-Dravidian word ten– south to mean the people who lived in the south/southern direction. The name telugu then, is a result of n -> l alternation established in Telugu, according to the natve tradition Telugu grammar has a hoary past. Sage Kanva was said to be the first grammarian of Telugu, a Rajeswara Sarma discussed the hisoricity and content of Kanvas grammar written in Sanskrit. He cited twenty grammatical aphorisms ascribed to Kanva, and concluded that Kanva wrote an ancient Telugu Grammar which was lost, according to the Russian linguist M. S. Andronov, Telugu split from the Proto-Dravidian languages between 1500 and 1000 BC. According to linguist Bhadriraju Krishnamurti, Telugu, as a Dravidian language, descends from Proto-Dravidian, linguistic reconstruction suggests that Proto-Dravidian was spoken around the third millennium BC, possibly in the region around the lower Godavari river basin in peninsular India. The material evidence suggests that the speakers of Proto-Dravidian were of the associated with the Neolithic societies of South India. A legend gives the Lepakshi town a significant place in the Ramayana — this was where the bird Jatayu fell, when Sri Rama reached the spot, he saw the bird and said compassionately, “Le Pakshi” — ‘rise, bird’ in Telugu. This indicates the presence of Telugu Language during Ramayana period, there is a mention of Telugu people or Telugu country in ancient Tamil literature as Telunka Nadu. Telugu words were found in Hebrew literature, inscriptions with Telugu words dating back to 400 BC to 100 BC have been discovered in Bhattiprolu in the Guntur district of Andhra Pradesh
8.
Postal Index Number
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A Postal Index Number or PIN or Pincode is a code in the post office numbering or post code system used by India Post, the Indian postal administration. The code is six digits long, the PIN Code system was introduced on 15 August 1972 by Shriram Bhikaji Velankar, an additional secretary in the Union Ministry of Communications. The system was introduced to simplify the manual sorting and delivery of mail by eliminating confusion over incorrect addresses, similar place names, there are nine PIN zones in India, including eight regional zones and one functional zone. The first digit of the PIN code indicates the region, the second digit indicates the sub-region, and the third digit indicates the sorting district within the region. The final three digits are assigned to individual post offices, a state may have one or more sorting districts depending on the volumes of mail handled. The fourth digit represents the route on which a Delivery office is located in the sorting district and this is 0 for offices in the core area of the sorting district. The last two represent the delivery office within the sorting district starting from 01 which would be the GPO or HO. The numbering of the office is done chronologically with higher numbers assigned to newer delivery offices. If the volume of mails handled at an office is too large, a new delivery office is created. Thus two delivery offices situated next to each other only have the first four digits in common. Each PIN code is mapped to exactly one delivery post office which receives all the mail to be delivered to one or more lower offices within its jurisdiction, all of which share the same code. The delivery office can either be a General Post Office, a Head Office or Sub Office which are located in urban areas. The post from the office is sorted and routed to other delivery offices for a different PIN or to one of the relevant sub offices or branch offices for the same PIN. Branch offices are located in areas and have limited postal services
