You would use a comma. The semi colon acts when both what is in front and behind it can stand alone as a sentence. “With technology in the hands of so many people” does not make sense standing alone.
I'm not exactly sure what you mean but "yield" might be a possible answer if i am assuming correctly.
The novel deals with the rise and fall of Okonkwo , a man from the village of Unuofia. Okonkwo was not born a great man, but he achieved success by his hard work. His father was a lazy man who preferred playing the flute to tending the soil.
The correct Aswer is All of the above. You need to attach the answers.