History
After centuries of the rule of the Western Gangas, Bangalore was captured by the Cholas in 1024 which later passed on to the Chalukya-cholas in 1070. In 1116 the Hoysala Empire, overthrew the Cholas and extended its rule over Bangalore. Modern Bangalore was founded by a vassal of the Vijayanagara Empire, Kempe Gowda I, who built a mud fort and a Nandi Temple in the proximity of modern Bangalore in 1537. Kempe Gowda referred to the new town as his "gandu bhoomi" or "Land of Heroes".[8]
Within the fort, the town was divided into smaller divisions called petes (IPA: [peɪteɪ]). The town had two main streets: Chickkapete Street, which ran east-west, and Doddapete Street, which ran north-south. Their intersection formed the Doddapete Square — the heart of Bangalore. Kempe Gowda's successor, Kempe Gowda II, built four famous towers that marked Bangalore's boundary.[14] During the Vijayanagara rule, Bangalore was also referred to as "Devarāyanagara" and "Kalyānapura" ("Auspicious City"). After the fall of the Vijayanagara Empire, Bangalore's rule changed hands several times. In 1638, a large Bijapur army led by Ranadulla Khan and accompanied by Shahji Bhonsle defeated Kempe Gowda III and Bangalore was given to Shahji as a jagir. In 1687, the Mughal general Kasim Khan defeated Ekoji, son of Shahji, and then sold Bangalore to Chikkadevaraja Wodeyar (1673–1704) of Mysore for 300,000 rupees.[15][16] After the death of Krishnaraja Wodeyar II in 1759, Hyder Ali, Commander-in-Chief of the Mysore Army, proclaimed himself the de facto ruler of Mysore. The kingdom later passed to Hyder Ali's son Tippu Sultan, known as the Tiger of Mysore. Bangalore was eventually incorporated into the British East Indian Empire after Tippu Sultan was defeated and killed in the Fourth Anglo-Mysore War (1799). The British returned administrative control of the Bangalore "pete" to the Maharaja of Mysore, choosing only to retain the Cantonment under their jurisdiction. The 'Residency' of Mysore State was first established at Mysore in 1799 and later shifted to Bangalore in the year 1804. It was abolished in the year 1843 only to be revived in 1881 at Bangalore and finally to be closed down in 1947 with the departure of the British. The British, found it easier to recruit employees in the Madras Presidency and relocate them to cantonment area during this period. The Kingdom of Mysore relocated its capital from Mysore city to Bangalore in 1831.[17] Two important developments during this period contributed to the rapid growth of the city: the introduction of telegraph connections and a rail connection to Madras in 1864.
In the 19th century, Bangalore essentially became a twin city, with the "pete", whose residents were predominantly Kannadigas, and the "cantonment" created by the Britishers, whose residents were predominantly Tamils. Bangalore was hit by a plague epidemic in 1898 that dramatically reduced its population. New extensions in Malleshwara and Basavanagudi were developed in the north and south of the pete. Telephone lines were laid to help co-ordinate anti-plague operations, and a health officer was appointed to the city in 1898. In 1906, Bangalore became the first city in India to have electricity, powered by the hydroelectric plant situated in Shivanasamudra. Bangalore's reputation as the Garden City of India began in 1927 with the Silver Jubilee celebrations of the rule of Krishnaraja Wodeyar IV. Several projects such as the construction of parks, public buildings and hospitals were instituted to beautify the city. After Indian independence in August 1947, Bangalore remained in the new Mysore State of which the Maharaja of Mysore was the Rajapramukh. Public sector employment and education provided opportunities for Kannadigas from the rest of the state to migrate to the city. Bangalore experienced rapid growth in the decades 1941–51 and 1971–81 , which saw the arrival of many immigrants from northern Karnataka. By 1961, Bangalore had become the sixth largest city in India, with a population of 1,207,000.[14] In the decades that followed, Bangalore's manufacturing base continued to expand with the establishment of private companies such as Motor Industries Company (MICO; a subsidiary of Robert Bosch GmbH), which set up its manufacturing plant in the city. Bangalore experienced a boom in its real estate market in the 1980s and 1990s, spurred by capital investors from other parts of the country who converted Bangalore's large plots and colonial bungalows to multi-storied apartments.[18] In 1985, Texas Instruments became the first multinational to set up base in Bangalore. Other Information Technology companies followed suit and by the end of the 20th century, Bangalore had firmly established itself as the Silicon Valley of India.
Geography
Bangalore lies in the southeast of the South Indian state of Karnataka. It is in the heart of the Mysore Plateau (a region of the larger Precambrian Deccan Plateau) at an average elevation of 920 m (3,018 feet). It is positioned at 
12.97° N 77.56° E and covers an area of 741 km² (286 mi²).[1] The majority of the city of Bangalore lies in the Bangalore Urban district of Karnataka and the surrounding rural areas are a part of the Bangalore Rural district. The Government of Karnataka has carved out the new district of Ramanagaram from the old Bangalore Rural district.
The topology of Bangalore is flat except for a central ridge running NNE-SSW. The highest point is Doddabettahalli, which is 962 m (3,156 ft) and lies on this ridge.[19] No major rivers run through the city, though the Arkavathi and South Pennar cross paths at the Nandi Hills, 60 km (37 mi.) to the north. River Vrishabhavathi, a minor tributary of the Arkavathi, arises within the city at Basavanagudi and flows through the city. The rivers Arkavathi and Vrishabhavathi together carry much of Bangalore's sewage. A sewerage system, constructed in 1922, covers 215 km² (133 mi²) of the city and connects with five sewage treatment centers located in the periphery of Bangalore.[20]
In the 16th century, Kempe Gowda I constructed many lakes to meet the town's water requirements. The Kempambudhi Kere, since overrun by modern development, was prominent among those lakes. In the earlier half of 20th century, the Nandi Hills waterworks was commissioned by Sir Mirza Ismail (Diwan of Mysore, 1926–41 CE) to provide a water supply to the city. Currently, the river Kaveri provides around 80% of the total water supply to the city with the remaining 20% being obtained from the Thippagondanahalli and Hesaraghatta reservoirs of the river Arkavathy.[21] Bangalore receives 800 million litres (211 million US gallons) of water a day, more than any other Indian city.[22] However, Bangalore sometimes does face water shortages, especially during the summer season in the years of low rainfall. A random sampling study of the Air Quality Index (AQI) of twenty stations within the city indicated scores that ranged from 76 to 314, suggesting heavy to severe air pollution around areas of traffic concentration.[23]
Bangalore has a handful of freshwater lakes and water tanks, the largest of which are Madivala tank, Hebbal lake, Ulsoor lake and Sankey Tank. Groundwater occurs in silty to sandy layers of the alluvial sediments. The Peninsular Gneissic Complex (PGC) is the most dominant rock unit in the area and includes granites, gneisses and migmatites, while the soils of Bangalore consist of red laterite and red, fine loamy to clayey soils.[23] Vegetation in the city is primarily in the form of large deciduous canopy and minority coconut trees. Though Bangalore has been classified as a part of the seismic zone II (a stable zone), it has experienced quakes of magnitude as high as 4.5.[24]
Due to its high elevation, Bangalore usually enjoys salubrious climate throughout the year, although freak heat waves can make things very uncomfortable in the summer.[25] A common refrain among Bangaloreans is that summer has gotten progressively hotter over the years. This could be due to the loss of green cover in the city, increased urbanization and the resulting urban heat island effect, as well as possibly climate change. The coolest month is January with an average low temperature of 15.1 °C and the hottest month is April with an average high temperature of 33.6 °C.[26] The highest temperature ever recorded in Bangalore is 41 °C and the lowest ever is 7.8 °C.[citation needed] Winter temperatures rarely drop below 12 °C (54 °F), and summer temperatures seldom exceed 36–37 °C (100 °F). Bangalore receives rainfall from both the northeast and the southwest monsoons and the wettest months are September, October and August, in that order.[26] The summer heat is moderated by fairly frequent thunderstorms, which occasionally cause power outages and local flooding. The heaviest rainfall recorded in a 24-hour period is 180 mm (7 in) recorded on 1 October 1997.
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