In the late 1800's, as industrialization accelerated and a massive wave of non-WASP immigrants flooded American cities, the detached home with a sizable yard became the symbol of safety, security, domesticity and a bulwark against

The following is missing for the question to be complete:

A. Crowding

B. Immigrating ghettos

C. Immorality

D. All the above

   D. All the above

Explanation: With industrialisation, more and more jobs were created, and plenty of jobs stimulated increasing migration from Europe to the United States, so that in the late 1800's, many migrants, most of them were from Southern and Eastern Europe, among others of course from all parts of the world, Asia, etc, arrived to US. The great waves of migrants during the nineteenth century caused the seizure of discomfort and dislikes in US residents who had previously settled, or rather descendants of those who had settled earlier. These descendants of the previously settled were born in the US and natives as such, considered privileged in achieving the American Dream over later immigrants.

With so many migrants wanting to work for low wages, a large crowd was created in urban areas because such migrants would be settled in workers' quarters and ghettos to be close to industrial zones. In such ghettos and quarters, because of the large supply of labour, many were out of work and, of course, indulged in alcoholism, crime, various adventures and immoral behaviour.

All of this again conditioned that those who already belonged to a middle class with income sufficient for their own detached houses with a yard began to resort to such settlements with the mentioned houses and yard. All this as a status symbol of the class to which they belong, but also as a symbol of security from overpopulated neighbourhoods and ghettos in which there was all sorts of immorality.