The correct answer is Lord Dalhousie.Lord Dalhousie introduced the Doctrine of Lapse for annexing the dependant states whose ruler died without a natural heir to succeed him.Some important Indian States viz. Satara (1848), Udaipur (1852), Jhansi (1853), Jaitpur and Sambalpur (1849), and Nagpur (1854) were annexed by the enforcement of the Doctrine of Lapse.He also introduced the Doctrine of Good of Governed under which Awadh (1856) and Punjab (1849) were annexed.Dalhousie established Public Works Department, the objective behind the formation of this department was the construction and maintenance of canals, roads, bridges, etc.