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wiki/Nizams_Guaranteed_State_Railway
Development of railway network
Nizam's Guaranteed State Railway, a railway company fully owned by the Nizams, was established in 1879[10] Formed to connect Hyderabad State with the rest of British India, it had its headquartered at Secunderabad Railway Station. Its construction commenced in 1870, and four years later, the Secunderabad-Wadi line was completed. In 1879, Mahbub Ali Khan took over the railway line, which became managed by the Nizam's state-owned railway.[11]
After independence, it was integrated into Indian Railways. The introduction of railways also marked the beginning of the industry in Hyderabad, and four factories were built to the south and east of Hussain Sagar Lake.[12]