There are some 'Push Factors' like drought, war, poverty, overcrowding, religious persecution, natural disaterts, protest and fear of loss of wealth. =D
Push-pull factors in migration either push people out of an area due to depletion of natural resources or pull in due to abundant land that attracts people.
push factor is when something have the choice to move away from somewhere or something and pull factor is when something is forced to move.Push Factors Not enough jobs Few opportunities "Primitive"...
Well...it might be that old "supply and demand" factor. As one example: a corporation/rancher/farmer might have the "demand" and the immigrant might have the "supply."