Christopher Columbus accidentally discovered The Americas after taking 4 trips across the Atlantic Ocean. He tried to find a route from Europe to Asia.
He was elected by popular vote, so I believe it would be C.
I think it might be D. Although I am not a genius there were a few Greek uprisings and the Persians had one simple rule that you had to follow, don't ever, EVER betray them.
Answer:
The slave code kept enslaved people frightened and powerless
