After 1830 the urban areas of the country grew more rapidly than the rural areas. By 1890 industrialization had produced substantial growth in cities, and 35 percent of Americans lived in urban areas, mostly in the northern half of the United States.
Answer:
It means that people show their true colors when there by theirself and they arnt typically fake around other people but only they know their true selves its just like the expression "What you do in the dark always comes to light"
Explanation:
Jack London was the author of "To Build A Fire"