The meaning behind that simile is that ‘they’ are getting tons of gold like they were corn grains which if you’ve seen them, there’s a lot in just one corn. So basically those people were getting a lot of gold.
A.
Walt Whitman was an American romantic poet born in 1819 in New York.
D) seeing his mother write “black” on a government census
They’re similar since they end in -ter and -tor, which generally sound similar, but they’re different as “director” is a noun meaning a person who directs something, while “shatter” is a verb meaning to break something into tiny pieces (you can shatter a window, a glass, a plate, etc).