Answer:
IT WAS FIRST USED AS A WEAPON OF MASS DESTRUCTION
AND THERE IS A SECOND USE FOR THE ZYKLON B WAS CAN ALSO BE USED AS A PESTICIDE WAS PRODUCED IN GRANULES CONSISTING OF PRUSSIC ACID.
Explanation: THIS DAY SEPT 3, 1941 ZYKLON B WAS USED AS A WEAPON OF MASS DESTRUCTION FOR THE FIRST TIME
