The urban working class (proletariat) grew as Russia industrialised.
At first, movement to the cities was temporary and seasonal such as people returning home to harvest among other reasons.
Later in the century, increasing numbers of peasants moved permanently to towns and cities.
Moscow and St Petersburg both had population of over 1 million by 1900.
A significant proportion of the new urban working class was female.
Women made up 20% of the industrial workforce in 1885 but a third by 1914.
Conditions for urban workers were often shocking.
Peasants who moved to a town or city often found themselves housed in overcrowded barracks with inadequate sanitation provided for them by their employer.
Workers ate in canteens and washed in communal bath-houses.
For those who found private housing, conditions were little better with 40% lacking running water and sewers.
Despite the low quality of housing, rents were often expensive because of the high demand.