Poverty and conflicts drive people away from their homelands and into developed countries.
Select one:

a.
Water shortages

b.
Growth of shanty cities

c.
Mass famine in ill organized countries

d.
Runaway computer integration

e.
Pandemics

f.
War that could end civilization

g.
Unstoppable global migration

h.
Global warming

i.
The spread of deserts

j.
Extreme poverty​