Answer:
These sentences already have correct pronouns. But they do have some other issues with word choice, structure, and punctuation.
Explanation:
Moreover is like a continuation. Example: Dogs are very trainable, moreover they can act like they don't understand you.
Moreover is like saying in addition to.
The purpose of this piece of text is to inform the reader. I reckon that the source is from the Declaration Of Independence.
A serpent and an elephant. It was a town of machinery and tall chimneys, out of which interminable [unending] serpents of smoke trailed themselves for ever and ever, and never got uncoiled. It had a black canal in it, and a river that ran purple with ill-smelling dye, and vast piles of building full of windows where there was a rattling and a trembling all day long, and where the piston of the steam-engine worked monotonously up and down, like the head of an elephant in a state of melancholy madness.
