Ethnicity: Persian
Religion: Shiite muslim
Yes, Iran is an Islamic country.
The majority religion in Iran is Shi'ite Islam.
shiites
shiites
Persians/Iranians, It's the same
Iraq.
The majority of Zoroastreans live in Iran.
Shi'aa.The majority or 90% of all Muslims in Iran are Shiites. Shi'a Islam is the official state religion of Iran. Sunni and Sufi only represent 9%of the Muslims there.
A majority. About 90-95% of the population (according to the Wikipedia article on Iran).
Both. Shiites are primarily concentrated in Iran and the southeast of Iraq. In both countries, they constitute a majority of the country's inhabitants, although Iran's majority is larger both in number and percentage,
In Iran. Refer to related question below.
shia which is the sect of the majority in Iran