The richest discovery in the history of mining occurred in 1873. This so-called "Big Bonanza" made _______ the richest man in the world. A. John Mackay B. John Placer C. Henry Sutter D. Henry Comstock



Answer :

The richest discovery in the history of mining occurred in 1873. This so-called "Big Bonanza" made John Mackay the richest man in the world.