Yes. But they were not Twelver Shiites; they were Shiite Muslims of the Ismaili (Sevener) School.
As far as I am aware, there is no Shiite Islamic community in Israel. The Muslims in Israel are primarily Sunnis.
There are more Sunni Muslims than Shiite Muslims. Shiite Muslims represent about 15% of the global Islamic community whereas Sunni Muslims represent 85%. The numbers of the other sects are negligible.
No. They are almost all Sunni Muslims.
Sunnis
Shi'ite Muslims worship in Mosques as do Sunni Muslims.
Yes. Shiite Muslims are allowed to perform the hajj, but they cannot perform any rituals unique to Shiite Islam while in Saudi Arabia or they risk arrest or deportation.
The people of Lebnon have different religions like CHristian, Islam,.. and Muslims there are both shia and sunni. but Hezbollah in Lebanon are shiite Muslims.
Mehdi is a name affiliated with Muslims, especially Shiite Muslims.
Eid
The Safavids were Twelver Shiite Muslims.
this kind of ceremony advised and acted by the Imams Themselves as guardinaships and religious leaders of Shiite