Based on the passage, one way in which the situation in the late 19th century affected the vision of Africa's future is by shattering it.
The except in the third paragraph talks about a vision of the future of Africa where the British control the entire continent.
This vision was shattered by the Scramble for Africa in the late 19th century that saw other European powers gaining colonies in Africa which meant that the British would never control the entire continent.
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