As an example of a opposing situation, one could point to the demographic
growth achieved during the First Industrial Revolution (1765–1885) – the age of
proletarians – which did not stop development in Europe. Today the situation is not
the same because the development process in the 19th century – labour intensive
due to the level of technological development, as opposed to current development
levels – and the possibilities opened up by migration by the colonisation of new
lands (in Spain from 1880 to 1914 one-fifth of the total population migrated to
America) which were able to absorb most of the new contingents.