[6]Ranchi was the centre of the Jharkhand movement,[7] which called for a separate state for the tribal regions of South Bihar, northern Odisha, western West Bengal and the eastern area of what is present-day Chhattisgarh.The Jharkhand state was formed on 15 November 2000 by carving out the Bihar divisions of Chota Nagpur and Santhal Parganas.[10] Ranchi is rapidly growing its economy, and certain parks, special economic zones and industrial areas are being developed.[11] According to one popular tale, Thomas Wilkinson, a British captain, choose Archi (an Oraon tribal village) as headquarters.[12][13][14] In his book The Mundas and Their Country, anthropologist Sarat Chandra Roy writes that the name of the city is derived from the Mundari word aranchi, referring to a short stick used in driving cattle,[15] whereas others have opined that aranchi refers to bi-weekly market.In the 4th century CE, Nagvanshi king Raja Pratap Rai chose Chutia as his capital which is now a place in Ranchi.[12][19][20][21] With the expansion of the Mughal Empire, the sovereign status of the Nagvanshi dynasty was technically affected, but they continued to rule and administer independently.Thakur Ani Nath Shahdeo made Satranji as capital of Barkagarh estate near Subarnarekha river.Pandey Ganpat Rai, Tikait Umrao Singh and Sheikh Bhikhari also joined the rebellion.Ranchi has a hilly topography and its dense tropical forests a combination that produces a relatively moderate climate compared to the rest of the state.December and January are the coolest months, with temperatures dipping to the freezing point in some areas (Kanke).As per a study done by ASSOCHAM in late 2010, Ranchi was one of the highest employment generating Tier-III cities in India with a share of 16.8%, followed by Mangalore and Mysore.[54] The 2018 municipal election was the first time the mayoral and deputy mayoral candidates in Jharkhand could use political party symbols, while the candidates for councilor seats continued to use symbols allotted to them by the Jharkhand State Election Commission.Sanjay Seth won the seat in the 2019 General Election and represents this constituency at the Lok Sabha as a Member of Parliament.[59] The various infrastructure and civic services demands of the city are met by different entities, including Ranchi Municipal Corporation, state government departments, and parastatal organisations.As per a study done by ASSOCHAM in late 2010, Ranchi was the highest employment generating Tier-III cities in India followed by Mangalore and Mysore.There are many other upcoming shopping malls and commercial projects Ranchi is a center for numerous sports activities, including cricket, hockey, football, and many others.A tennis academy, which was inaugurated by Sania Mirza and Shoaib Malik, also runs beside the cricket stadium.