All Muslims must be grateful to Allah, The Glorious, Who guided them to The True Religion, Islam, and to the Prophet Muhammad (SAWA) who conveyed the message of Allah despite all the hardships and difficulties and torture, and to Ahlul Bayt (AS) who preserved the message and kept it intact by their great sacrifices including their lives to defend Islam.
Islam was never spread by sword of governments or armies but by the true evidence.
The governments of the opponents of Ahlul Bayt did everything to prevent Muslims from knowing or following Ahlul Bayt and forced them to follow other sects. That is why you see spread of non Shia sects under the governmental propagation and orders while followers of Ahlul Bayt under pressure and torture. Yes, millions of Muslims who came to know about the true Islam, left those sects and became followers of Ahlul Bayt (AS). Most of Iran was following those sects of those governments away from Ahlul Bayt but after centuries, and by efforts of sincere scholars, they found the real teachings of Ahlul Bayt and followed them. They are grateful to Allah who guided them to the true Islam.
'They are till today many Iranians who follow those sects spread by anti Ahlul Bayt governments. After all, all Muslims following any sect are Muslims.
First, in this day and age, it is good for us to be thoughtful about how we phrase things. "Liberating" people from Zoroastrianism is rude. Zoroastrianism, like most world religions, has good things and bad things. In any case, it is good to respect people's faith and heritage, especially since Zoroastrianism continues to be practiced today.
Second, describing the conquest of lands by the Muslim Empire as "liberation" can come across the wrong way.
It is true that 'Umar ibn al-Khattab ordered an invasion of the Sassanian Empire which led to the conquest of what is present-day Iran. So, it is more correct to say that he annexed Iran to the Arab-Muslim Empire, and this was one of the factors that led Iran to become a Muslim region.
That being said, military annexation of a region is not the same thing as converting a people to Islam, or even introducing them to Islam. Actual conversion to Islam in conquered lands happened over a span of time. Conversely, Islam spread in many areas, such as Indonesia, where the initial Muslim Empire had no power. There were good and bad points about the conquests of the early Muslim Empire.
Sometimes - in my experience - some of our Sunni brothers and sisters glorify those conquests, perhaps out of respect for the first 3 caliphs, without taking into consideration that they were in fact military conquests which were not dissimilar to the expansion of other empires. Like other military expansions they brought some good and and some difficulty, some people in these areas were (according to what we can glean from historical records) fine with being under Muslim rule or even welcomed it, and some resisted it. Basically it's good to take a more intermediate position, neither to say "Islam spread by the sword and those Muslims are violent!" nor to say "Muslims liberated all the other regions from their former faiths." (In fact, that comes across as quite violent.)
As for who introduced Iran to Islam, why not begin with Salman al-Farsi? And, second, what about the letter that the Prophet (S) sent to the Persian king, inviting him to Islam?
This claim is wrong.
Marja' of Taqleed is a status of the highest knowledgeable Mujtahid, who can be from any country.
Today, you see in Najaf Ashraf four main Maraaje' of Taqleed , but no one asks about the country of birth of them because it has never been a criteria. Same in Qum and other places of Hawzas.
The rules for females who are passing their menstruation period are same:
1. No Namaz (Preyers) whether obligatory or recommended and no Qaza (Qadha) of such Prayers later on.
2. No fasting but it must be made up as Qaza later on if she misses fasting any day in the Month of Ramadhan.
3. No sexual intercourse is permissible during menstruation period. Divorce is invalid during menstruation period.
4. It is not allowed for her and any person who is in the state of Janabah (man or woman) to recite any of the four verses of Quran of obligatory Sajda (In Sura Al-Alaq, Sura An-Najm, Sura Fussilat and Sura Al-Sajdah)
5. It is not allowed for her and any person who is in the state of Janabah (man or woman) be inside any Masjid. The inside of shrines of Ahlul Bayt (AS) are Masjids. The courtyard (Sahn) is not a Masjid so she can be in the Sahn but not inside the shrine.