Mostly they affected it through their imperialism. They would colonize and take over countries for resources, and with them they would bring their technologies and things that they needed. After they left these things stayed, things like telephone and telegram lines and similar things. Culturally, they would mostly disregard the local culture and impose their own which would often be accepted and kept by the locals, but often there was also warfare.
Immigration would be the best option
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Conflict, insecurity, weak institutions and limited access to justice remain a great threat to sustainable development.
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<h2>The British presence in India began through trade. Men like Robert Clive of the British East India Company combined military prowess with a ruthless ambition and became fabulously wealthy. With wealth came power, and traders took control of huge swathes of India.</h2>