In many nations uneducated is acute issue, which numbers are increasing. There seem to be two main causes, and a number of effects, which we will discuss here.
Perhaps, this issue is caused by low qualified teachers. These days more and more teachers are losing their motivation and becoming passive on students' education  due to a heavy workload.  Over the last decade,  there has been a prolific increase in requirement for teachers, meanwhile salary and social security stay constant.    The second key cause is families financial background. Numerous families are destitute to let their children pursue higher proper education.   as such young people  have to start working to support their families financially as soon as they can.  For an illustrative example,  children in China or India have been sent different kind of factories, which triggered to work in supporting their families.
Regarding the effects  this problem may bring about financial hardships to the economies of many countries and this change citizens income. For instance,  when the younger generation replaces elder one, the effects of lack of knowledge might lead to the crisis. In addition,  more educated politicians and businessmen from other countries can rule these countries. Another enormous influence would be increasing rate of unemployment,  so many young people have no education and few employment opportunities. In fact, this can lead to the temptation of such young people to engage in petty crimes, such as shoplifting or vandalism, which will make crime rates dangerously high.
To sum up, Illiteracy, it is mainly caused by slow economic growth, which directly affects the family income status in the modern world. 
In  
many
 nations uneducated is acute issue, which numbers are increasing. There seem to be two main causes, and a number of effects, which we will discuss here.
Perhaps, this issue  
is caused
 by low qualified teachers. These days more and more teachers are losing their motivation and becoming passive on students' education 
  
due to a heavy workload.  Over the last decade, 
  
there has been a prolific increase in requirement for teachers, meanwhile salary and social security stay constant.  
   
The second key cause is  
families
 financial background. Numerous  
families
 are destitute to  
let
 their children pursue higher proper education.  
  
 as
 such young  
people
   
 have to
  start
 working to support their  
families
  financially
 as  
soon
 as they can.  For an illustrative example, 
  
children in China or India have been  
sent
  different
 kind of factories, which triggered to work in supporting their families.
Regarding the effects 
  
this problem may bring about financial hardships to the economies of  
many
 countries and this  
change
 citizens income.  
For instance
, 
  
when the younger generation replaces elder one, the effects of lack of knowledge might lead to the crisis.  
In addition
, 
  
more educated politicians and businessmen from other countries can  
rule
 these countries. Another enormous influence would be increasing rate of unemployment, 
  
 so
  many
 young  
people
 have no education and few employment opportunities. In fact, this can lead to the temptation of such young  
people
 to engage in petty crimes, such as shoplifting or vandalism, which will  
make
 crime rates  
dangerously
 high.
To sum up, Illiteracy, it is  
mainly
 caused by slow economic growth, which  
directly
 affects the  
family
 income status in the modern world.