Which of the following represents a long run adjustment

Long run adjustments are adjustments made in response to the current state of the economy. Examples of these adjustments are:

These changes occur when increases and decreases in demand affect the price or production and cause a company to adjust for equilibrium.

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.