The evidence and explanation that best show how the historical setting contributes to the effect of personification in the passage is:
“But there was no silence; all the time the motor omnibuses were turning their wheels and changing their gear; like a vast nest of Chinese boxes all of wrought steel turning ceaselessly one within another the city murmured;”
This excerpt illustrates how the movement of motor omnibuses and their mechanical sounds are personified as a "vast nest of Chinese boxes," suggesting a sense of life and continuity in the bustling urban environment of the time. The historical setting, which includes the presence of motor transportation in an industrialized city, enhances the personification by portraying the city as an organism that is alive, constantly moving, and interacting with its inhabitants. The comparison to “Chinese boxes” adds to the complexity and interconnectedness of the urban landscape, reflecting how technology and nature exist side by side in that historical context.