QUESTION: answer this: when does star wars the last jedi premiere??

ANS: December 15, 2017

QUESTION: answer this: who has played in the most world series??

ANS: New York Yankees

QUESTION: answer this: when did the us dollar become reserve currency??

ANS: After World War II

QUESTION: answer this: when did zebra mussels come to the great lakes??

ANS:
Since the 1980s