Original sentence: Changes caused by Robert Clive to the revenue system and existing agricultural practices to maximize profits for the company led to the Bengal Famine of 1770 and lasted on till the 18th and 19th centuries causing subsequent famines.Historians such as William Dalrymple have called Robert Clive an "unstable sociopath" due to these harmful policies and actions  which resulted in famines, atrocities towards local native Indians and peasants, and disastrous irrevocable effects to India, Pakistan and Bangladesh
Edited sentence: Dalrymple writes that changes caused by Robert Clive to the revenue system and existing agricultural practices to maximize profits for the company led to the Bengal Famine of 1770 and lasted on till the 18th and 19th centuries causing subsequent famines.Historians such as William Dalrymple have called Robert Clive an "unstable sociopath" and written that his policies and actions resulted in famines, atrocities towards local native Indians and peasants, and disastrous irrevocable effects to India, Pakistan and Bangladesh