This is a common interview question. You could say your greatest professional achievement was to help transform a policy or a department or to encourage your team at work. There are many things you could say, just be honest and creative.
Getting a life.
The greatest achievement of the Inca empire was the building of Macchu Picchu.
Bobby Orr's greatest achievement ever was that he was a defenseman with an offensive mind.
The greatest achievement of any gay person is to live a happy, healthy life.
The greatest achievement of the Han Dynasty was the seismograph and the art of making paper.
electricity
His temple
your birth
He considered his lifelong greatest achievement (when asked at around 86 years of age), lifelong celibacy.
Her greatest achievement was saving john smith and making her live better
I think that the greatest achievement was art, science and technology.
The greatest achievement in a persons life will differ depending on the person. Some people may choose children and marriage, while others may say wealth is an important achievement.