A yound man with dreams, Joseph

Genesis 37:1-36
Joseph had two dreams. He was tending the flocks with his brothers when he was seventeen.
His brother pulled Joseph up out of the cistern and sold him for twenty shekels of silver to the Ishmaelites, who took him to Egypt.
Jacob tore his clothes, put on sackcloth and mourned for his son many days.
The final section of Genesis, centring on Joseph, now begins. This is the last of the family stories. Exodus to Deuteronomy will tell the story of a nation.
Why?
The special robe: Whether this is long-sleeved( and as for leisure not work) or multi-coloured(like the Egyptian paintings of Asiatic dress), Joseph's brothers saw it as a sign that Jacob intended to make Joseph his heir.
The balm of Gilead was famous, and the spice-trade an important one from earliest times. Spices had many uses - in food preparation and the manufacture of incense and cosmetics. The trade-route from Damascus to the coast ran past Dothan.
Joseph's dreams are the special characters in his life. A man with dream in his life is good.
How?
Joseph was sold to Egypt, be loves one by his father.