I believe the answer is <span>romantic frustration or unrequited love
Sappho always filled all of her writing with intense emotions that the audiences could relate to.
But often time, Sappho made many reference for a request upon Aphrodite for the mercy from the hurt of Unrequited love.</span>
Joseph Stalin was the most important person of the formation of the Soviet Union
They may be Fault Lines or boundaries of Continental Plates.