All parts of culture do not change at the same pace. sociologist william ogburn referred to this disparity as which is the gap between the technical development of a society and the development of its moral and legal institutions.

All parts of culture do not change at the same pace. Sociologist william ogburn referred to this disparity as "cultural lag".

Culture lag is characterized as the time between the presence of another material creation and the making of proper modifications in comparing territory of non-material culture. This time is regularly long. It was more than fifty years, for instance, after the  was concocted before it was utilized deliberately in workplaces. Indeed, even today, we may have a family framework better adjusted to a ranch economy than to a urban modern one, and atomic weapons exist in a conciliatory climate receptive to the nineteenth century.

the factors that the economies of the muslim empires prosper were:

1- land trade routes-located between three continents  

2- sea trade routes

trade contributed to the spread of muslim empires, and with that islamic culture led to a growing feeling of internationalism resulted in the transfer of technology, science, and other cultural forms.