I sat on my suitcase as the Swiss train carried me to a meeting I'd dreamed of for two decades. At the end of the journey waited Anne Frank's father, Otto, with whom I had corresponded since I was fourteen.
What does `corresponded' mean in this sentence?
Please explain it.
Yes, you got the idea.I had corresponded since I was fourteen = I used to write letter to Otto and in return they write letter. But this process occurred only after when I reached fourteen.