Mortality and fertility rates in cities declined rapidly major effect of urbanization on British citizens' lives during the Industrial Revolution. During industrial revolution there is hardship for workers.
Rapid urbanization, or the migration of citizens to cities, was an outcome of the Industrial Revolution. Agricultural changes, booming population development.
An ever-increasing demand for workers prompted a massive migration from farmland to cities. Small villages around coal or iron mines evolved into cities almost instantly.
Thus, option B is correct.
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