Your response is incredibly vague.
Of course, I definitely think that improvements were made in the working conditions for climbing boys.
Why "of course"?
What improvements have been made? Give lots of details.
I wouldn't assume that the governments just ran away from this situation, and did nothing about it; all together they must have done something to support these children and make their work easier.
Why would you not assume this?
"they must have done something" = ?? Such as ... what?
How and why you need to use details/examples to back up any statements you make.
Whether you're writing a paragraph or an essay, these ideas are priceless.
Notice #3 on the list.