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Buen, when they were written, foreigners were regarded much like they are today by some people; they look different, they talk different, they were unfortunately born abroad, and they don't have a sense of humour.
The better old books often spoke kindly of the servants or bearers who helped the white man (be he soldier or missionary) to do his exploring and exploiting, and some of whom were clever enough to speak a form of English.
That was the zeitgeist, and we see our own here on AB every day.
The two books I mentioned were more to do with English chaps in England - public school values of decency, fair play and loyalty, and ability to refrain from lashing out at a foe unless the honour of one's mother was threatened, etc, etc.
Harry Flashman was a fascinating villain from those days; immortalised in the Flashman Papers, and an inspiration to our current PM. Unfortunately our current PM lacks the dashing whiskers, the ramrod back, the physical courage and strength; also, alas, the self-awareness of his own unashamed baseness which makes him tolerable and even attactive.
Sorry to drift off-thread.