Short answers, pulled from the story.
Early human species began living in naturally occurring caves for at least one million years. Evidence of this ancient domesticity stretches across the globe, from the Zhoukoudian caves in China to the Cave of Hearths in South Africa.
During the Bronze Age between 3500 and 1200 BC communities began building mudbrick houses that were organized around small courtyards. These early urban homes featured uniform bricks and bitumen mortar that have survived the millennia.
The concept of home underwent a profound transformation during the Enlightenment of the 17th century shifting from a public space to a private sanctuary. Before this era one's home was more public than private but traits such as privacy intimacy and familiarity began to achieve greater prominence.
A mobile home also known as a house trailer is a prefabricated structure built in a factory on a permanently attached chassis before being transported to site. Used as permanent homes or for holiday or temporary accommodation they are often left permanently or semi-permanently in one place but can be moved.
Scholars have said that the concept of home is dependent on homelessness suggesting that without homelessness we would not be concerned with what home means. The dichotomy between home and homelessness is to the extent that the concept of home is dependent on homelessness.