An important political activist who wanted a unified Italy
Throughout his life Mazzini founded and supported revolutionary groups that wanted to unite Italy and free the country from foreign powers. He didn't complete his goal in his lifetime but it was partially done. However, he considered it a failure. When Italy was united he was still credited with playing a major role. He is still sometimes referred to as 'the soul of Italy' and 'the beating heart of Italy'.
Map showing unification of Italy
In my opinion, Mazzini was a hard worker who kept working at what he believed even after he was imprisoned and exiled. He remained inclusive of all people and didn't even consider his efforts a success even though he played a huge role in the unification of Italy.