3. Who are these people and how are they connected to the Pharaon; Edmond Dantes, Leclere, Danglars, Mercedes, Morrel ?

the Pharaon is the ship.

Edmond Dantes is the first officer (first mate) of the Pharaon.

Mercedes is Edmond's fiancee.

Leclere is the captain of this ship. (In the very beginning of the book we learn that he fell ill and died during the voyage.)

Danglars is the cargomaster of the Pharaon.

Morrel is the owner of the Pharaon.