 
<translate> Don amsa wannan tambayar, ya kamata mu san cewa: Sarauniya Elizabeth II ta zama mafi dadewa a matsayin masarautar Burtaniya a ranar 9 ga Satumba 2015 lokacin da ta zarce mulkin kakarta Victoria. Amsar ita ce Sarauniya Elizabeth II. <eng> To answer this question, we should know that: Queen Elizabeth II became the longest-reigning British monarch on 9 September 2015 when she surpassed the reign of her great-great-grandmother Victoria. The answer is Queen Elizabeth II. 