12263/64 Pune - H. Nizamuddin AC Duronto - यह है पुणेकर वालों की राजधानी जिसका speed है सबसे Great, नहीं पहुंची है अब तक अपने लक्ष्य स्थान पर Late. - Sahil Khandare

East India Rail OF the East India Company
It was but natural that the East India Company should seek a base in Bengal. With the decline in the Mughal empire, the Company increasingly grew more powerful, until it replaced Mughal rule completely. While Delhi or Agra had been the political capital of the Mughals, Bengal's commercial importance meant that Calcutta became the capital city from where the East India Company traded and ruled.
With the setting up of the East India Rail, closer links emerged between Calcutta and Delhi and made trade and...
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commerce easier. Between 1882 to 1866, the East India Rail (which originally connected Calcutta to Varanasi) was extended up to Delhi and Agra.
I found this interesting map of the East India Rail, and how it progressed from Calcutta to Delhi, via Varanasi (the rail station in Varanasi is called Mughal-serai, and it was one of the many points along the Grand Trunk Road where the Mughals has built inns).