so u mean to say that head of hazrat hussain kept for display for years during regime of Yazid bin Muavia.
secondly why the head sent to egypt .......... ?
Kind of. After he whole Karbala scene, the ladies and children that came along were taken as prisoners for around a year or 2 I believe. They were taken to Kufa and Syria and then to Karbala and were then finally released. When they were in Syria, it is said that the head was placed on two areas where Yazid would poke it with a stick.
I'm not actually sure about that, back then Egypt was also part of the region and I believe Yazid or somebody else was the governor of Egypt so it was sent there.