The British first established cordial relations with local chieftains who eventually agreed to accept English settlers living side by side with them. The Anglo-Zulu War in 1879 was a rare case, by which the Zulu nation had to be defeated militarily. The colonisation of India was largely peaceful. The East India Company governments were based on those of the Indian states and much of the effective work of administration was initially still done by Indians, who willingly cooperated with the British.
You make the British sound quite benign which was hardly the case. They were quite happy to live side by side when it suited them but they always had to be top dog and a very nasty brutal one too. They lived side by side at Plymouth Rock until they had their feet firmly established on the continent and then began the great surge to the west resulting in tears for Native Americans at Wounded Knee. They also raided African shores and introduced African slaves to the America continent. In Australia and Tasmania things were also as bad if not worse. A bounty on the heads of Native Tasmanians resulted in all of them becoming extinct by the 1920s,a 100 per cent ethnic cleansing . The people of India hardly cooperated with the British. It was non-cooperation by Gandhi which made the country ungovernable forcing the British out in 1948.
Tasmania was the worst place on earth at the time and there was a high concentration of the worst offenders of England as well as convicts banished from mainland Australian penal settlements for committing further crimes. These convicts made the colony extremely dangerous. Tasmania was a jail on a large scale and the culture of terror in convict society was responsible for what happened to the native inhabitants. Benjamin Madley, From Terror to Genocide: Britain's Tasmanian Penal Colony and Australia's History Wars, Journal of British Studies, Vol. 47, No. 1 (Jan., 2008, pp. 77-106) http://www.jstor.org/stable/25482686
