Discuss the role of geographic mobility in decreasing or increasing the dispersion of earnings. Solution Ans;Geographic mobility means reallocation of economic resources.It occurs when production of goods in one geographical area moved to other geographical area depending on the ease with which resources can reallocate and when production location shifts,population migrate.thus,it is the measure how population move overtime.Migration of people from their native country to another may cause settled people to move out which can decrease the earnings of those currently working there becase sometimes migrated people are to work at low earnings..Migration from large cities have devasting effect such as job shortages occur.causing buisnesses to fold due to loss of customers. There are several factors influencing geographic mobility depending on those factors it can increase or the dispersion of earnings.suppose if the migration is done for work then it allows migrants to develop their knowledge and skills and learn new techniques it will positive effect on their earnings.