The climate of India defies easy generalisation, comprising a wide range of weather conditions across a large geographic scale and varied topography. Analysed according to the Köppen system, India hosts six major climatic subtypes, ranging from desert in the west, to alpine tundra and glaciers in the north, to humid tropical regions supporting rainforests in the southwest and the island territories. Many regions have starkly different microclimates. The nation has four seasons: winter (January and February), summer (March to May), a monsoon (rainy) season (June to September), and a post-monsoon period (October to December).
India's unique geography and geology strongly influence its climate; this is particularly true of the Himalayas in the north and the Thar Desert in the northwest. The Himalayas act as a barrier to the frigid katabatic winds flowing down from Central Asia. Thus, North India is kept warm or only mildly cold during winter; in summer, the same phenomenon makes India relatively hot. Although the Tropic of Cancer—the boundary between the tropics and subtropics—passes through the middle of India, the whole country is considered to be tropical.
As in much of the tropics, monsoonal and other weather conditions in India are unstable: major droughts, floods, cyclones and other natural disasters are sporadic, but have killed or displaced millions. India's long-term climatic stability is further threatened by global warming. Climatic diversity in India makes the analysis of these issues complex.
The rupee (Hindi: रुपया) is the currency of India. The issuance of the currency is controlled by the Reserve Bank of India. The most commonly used symbols for the rupee are Rs, ₨ . The ISO 4217 code for the Indian rupee is INR. The modern rupee is subdivided into 100 paise (singular paisa).
In most parts of India, the rupee is known as the rupee, roopayi, rupaye, rubai or one of the other terms derived from the Sanskrit rupyakam, raupya meaning silver; rupyakam meaning (coin) of silver. However, in West Bengal, Tripura, Orissa, and Assam, the Indian rupee is officially known by names derived from the Sanskrit ṭanka. Thus, the rupee is called টাকা ṭaka in Bengali, টকা tôka in Assamese, and ଟଙ୍କା ṭôngka in Oriya, with the symbol ৳, and is written as such on Indian banknotes.
India, the major portion of the Indian subcontinent, sits atop the Indian tectonic plate, a minor plate within the Indo-Australian Plate.
India's defining geological processes commenced seventy-five million years ago, when the Indian subcontinent, then part of the southern supercontinent Gondwana, began a northeastwards drift—lasting fifty million years—across the then unformed Indian Ocean. The subcontinent's subsequent collision with the Eurasian Plate and subduction under it, gave rise to the Himalayas, the planet's highest mountains, which now abut India in the north and the north-east. In the former seabed immediately south of the emerging Himalayas, plate movement created a vast trough, which, having gradually been filled with river-borne sediment, now forms the Indo-Gangetic Plain. To the west of this plain, and cut off from it by the Aravalli Range, lies the Thar Desert. The original Indian plate now survives as peninsular India, the oldest and geologically most stable part of India, and extending as far north as the Satpura and Vindhya ranges in central India. These parallel ranges run from the Arabian Sea coast in Gujarat in the west to the coal-rich Chota Nagpur Plateau in Jharkhand in the east. To their south, the remaining peninsular landmass, the Deccan Plateau, is flanked on the left and right by the coastal ranges, Western Ghats and Eastern Ghats respectively; the plateau contains the oldest rock formations in India, some over one billion years old. Constituted in such fashion, India lies to the north of the equator between 6°44' and 35°30' north latitude and 68°7' and 97°25' east longitude.
India's coast is 7,517 kilometers (4,671 mi) long; of this distance, 5,423 kilometers (3,370 mi) belong to peninsular India, and 2,094 kilometers (1,301 mi) to the Andaman, Nicobar, and Lakshadweep Islands. According to the Indian naval hydrographic charts, the mainland coast consists of the following: 43% sandy beaches, 11% rocky coast including cliffs, and 46% mudflats or marshy coast.
Major Himalayan-origin rivers that substantially flow through India include the Ganges and the Brahmaputra, both of which drain into the Bay of Bengal. Important tributaries of the Ganges include the Yamuna and the Kosi, whose extremely low gradient causes disastrous floods every year. Major peninsular rivers whose steeper gradients prevent their waters from flooding include the Godavari, the Mahanadi, the Kaveri, and the Krishna, which also drain into the Bay of Bengal; and the Narmada and the Tapti, which drain into the Arabian Sea. Among notable coastal features of India are the marshy Rann of Kutch in western India, and the alluvial Sundarbans delta, which India shares with Bangladesh. India has two archipelagos: the Lakshadweep, coral atolls off India's south-western coast; and the Andaman and Nicobar Islands, a volcanic chain in the Andaman Sea.
India's climate is strongly influenced by the Himalayas and the Thar Desert, both of which drive the monsoons. The Himalayas prevent cold Central Asian katabatic winds from blowing in, keeping the bulk of the Indian subcontinent warmer than most locations at similar latitudes. The Thar Desert plays a crucial role in attracting the moisture-laden southwest summer monsoon winds that, between June and October, provide the majority of India's rainfall. Four major climatic groupings predominate in India: tropical wet, tropical dry, subtropical humid, and montane.
India was one of the earliest issuers of coins (circa 6th century BC). The first "rupee" is believed to have been introduced by Sher Shah Suri (1486-1545), based on a ratio of 40 copper pieces (paisa) per rupee. Among the earliest issues of paper rupees were those by the Bank of Hindustan (1770-1832), the General Bank of Bengal and Bihar (1773-75, established by Warren Hastings) and the Bengal Bank (1784-91), amongst others.
During British rule, and the first decade of independence, it was subdivided into 16 annas. Each anna was subdivided into 4 paise (also written pice) or 12 pies. Until 1815, the Madras Presidency also issued a currency based on the fanam, with 12 fanams equal to the rupee.
Historically, the rupee, derived from the Sanskrit word raupya, which means silver, was a silver coin. This had severe consequences in the nineteenth century, when the strongest economies in the world were on the gold standard. The discovery of vast quantities of silver in the U.S. and various European colonies resulted in a decline in the relative value of silver to gold. Suddenly the standard currency of India could not buy as much from the outside world. This event was known as "the fall of the rupee."
In 1898, the rupee was tied to the gold standard through the British pound by pegging the rupee at a value of 1 shilling 4 pence (i.e., 15 rupees = 1 pound). In 1920, the rupee was increased in value to 2 shillings (10 rupees = 1 pound). However, in 1927, the peg was once more reduced, this time to 1 shilling 6 pence (13⅓ rupees = 1 pound). This peg was maintained until 1966, when the rupee was devalued and pegged to the U.S. dollar at a rate of 7.5 rupees = 1 dollar (at the time, the rupee became equal to 11.4 British pence). This peg lasted until the U.S. dollar devalued in 1971.
The Indian rupee replaced the Danish Indian rupee in 1845, the French Indian rupee in 1954 and the Portuguese Indian escudo in 1961. Following independence in 1947, the Indian rupee replaced all the currencies of the previously autonomous states. Some of these states had issued rupees equal to those issued by the British (such as the Travancore rupee). Other currencies included the Hyderabad rupee and the Kutch kori.
In 1957, decimalisation occurred and the rupee was divided into 100 naye paise (Hindi for "new paise"). In 1964, the initial "naye" was dropped. Many still refer to 25, 50 and 75 paise as 4, 8 and 12 annas respectively, not unlike the usage of "bit" in American English for ⅛ dollar.
Con oltre un miliardo di abitanti, l'India è il secondo paese più popoloso al mondo dopo la Cina. L'incremento delle nascite, che toccò l'apice negli anni Settanta-Ottanta del Novecento, sembra essersi arrestato grazie soprattutto alle massicce campagne di pianificazione familiare; in realtà la crescita demografica si mantiene elevata grazie alla diminuzione della mortalità e la sovrappopolazione costituisce una delle piaghe sociali più drammatiche del paese, in relazione soprattutto alla densità e al degrado delle periferie urbane.
Nonostante l'urbanizzazione sia in costante crescita così come le megalopoli con oltre 10 milioni di abitanti, con il loro carico di inquinamento e povertà gran parte della popolazione vive ancora in villaggi rurali.
Capital: NEW DELHI
Population: 1,028,610,328 (census of 2001); estimate to 2006: 1.4 billion
Area: 3,287,263 square kilometre
Time zone: + 4.30 hours compared to Italy, + 3.30 in Italy when there DST
Languages: Hindi and English are official languages, while the languages used are a total of 23.
Religions: Hinduism, Islam, Christianity, Sikhism, Buddhism, Jainism, Zoroastrianism and other minors.
Currency: Indian Rupee (INR)
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