It is a good essay.
I have one question.
That does mean that in the future human beings are able to have much more choices to produce lots of opportunities for the development of mankind.
I think this sentence is a little bit redundant.
If you delete the phrase "have much more choices to" or "much more choices to produce".
in either ways, is the meaning of this sentence changed?
Perhaps, you may also consider this modified version:...in the future human beings are able to have more choices and opportunities for development.
By the way, since it is clear that the development you mention here is mankind's development, could the phrase "of mankind"