This sentence, [ According to some scholars, when poorly educated people read, wrote, and spoke, they corrupted the English language] apparently shows and explains a dire need to set standards in the English language or else the language may get corrupted in no time.
To inform readers about Iqbal
to inform readers about child labor
to persuade readers that child labor is a problem
to tell his own story
It takes a lot of time. The writing process is sometimes long and tedious and that is why many view it as the hardest part of an essay.