Tabaristan in the context of "Media (region)"

Northern Iran (Persian: شمال, romanized: Shomal, lit. 'North'), is a geographical term that refers to a relatively large and fertile area, consisting of the southern border of the Caspian Sea and the Alborz mountains.

It includes the provinces of Gilan, Mazandaran, and Golestan (ancient kingdom of Hyrcania, medieval region of Tabaristan). The major provinces, Gilan and Mazandaran, are covered with dense forests, snow-covered mountains and impressive sea shores.

The Ziyarid dynasty (Persian: زیاریان) was an Iranian dynasty of Gilaki origin that ruled Tabaristan from 931 to 1090 during the Iranian Intermezzo period. The empire rose to prominence during the leadership of Mardavij. After his death, his brother Vushmgir and his Samanid allies led the dynasty in wrestling for control over territory against the Buyids in the early- to mid-10th century. When Vushmgir died, his sons Bisutun and Qabus fought for influence. Qabus would eventually outlive his brother and ruled the kingdom. However, Qabus was placed in exile from 980 to 998 by the Buyid ruler, Adud al-Dawla who would then dominate Tabaristan, the heartland of Ziyarid power. A succession of other rulers came to rule the kingdom with Ghaznavid support in the early 11th century. The Nizari Ismaili state invaded and ended Ziyarid rule in 1090.

At its greatest extent, it ruled much of present-day western and northern Iran. During the turn of the century, the kingdom attracted many scholars, with the most notable being al-Biruni.

Mazanderanis (Mazanderani: مازرونی مردمون), also known as the Tabari people or Tabarestani people (Mazanderani: توری مردمون or تبری مردمون), are an Iranian people who are indigenous to the Caspian Sea region of Iran. They are also referred to as Mazanis for short. They inhabit the southern coast of the Caspian Sea and are part of the historical region known as Tabaristan. The Alborz Mountains mark the southern boundary of the area settled by the Mazanderani people.

Abū Jaʿfar Muḥammad ibn Jarīr ibn Yazīd al-Ṭabarī (Arabic: أَبُو جَعْفَر مُحَمَّد بْن جَرِير بْن يَزِيد ٱلطَّبَرِيّ; 839–923 CE / 224–310 AH), commonly known as al-Ṭabarī (Arabic: ٱلطَّبَرِيّ), was a Sunni Muslim scholar, polymath, historian, exegete, jurist, and theologian from Amol, Tabaristan, present-day Iran. Among the most prominent figures of the Islamic Golden Age, al-Tabari is widely known for his historical works and expertise in Quranic exegesis, and has been described as "an impressively prolific polymath". He authored works on a diverse range of subjects, including world history, poetry, lexicography, grammar, ethics, mathematics, and medicine. Among his most famous and influential works are his Quranic commentary, Tafsir al-Tabari, and historical chronicle, Tarikh al-Tabari.

Al-Tabari followed the Shafi'i school for nearly a decade before he developed his own interpretation of Islamic jurisprudence. His understanding of it was both sophisticated and remarkably fluid, and, as such, he continued to develop his ideas and thoughts on juristic matters right until the end of his life.

Spāhbad (also spelled spahbod) is a Middle Persian title meaning "army chief" or commander used chiefly in the Sasanian Empire. Originally there was a single spāhbad, called the Ērān-spāhbed, who functioned as the generalissimo of the Sasanian army. From the time of Khosrow I (r. 531–579) on, the office was split in four, with a spāhbad for each of the cardinal directions. After the Muslim conquest of Persia, the spāhbed of the East managed to retain his authority over the inaccessible mountainous region of Tabaristan on the southern shore of the Caspian Sea, where the title, often in its Islamic form ispahbedh (Persian: اسپهبذ; in Arabic: اصبهبذ ʾiṣbahbaḏ), survived as a regnal title until the Mongol conquests of the 13th century. An equivalent title of Persian origin, ispahsālār or sipahsālār, gained great currency across the Muslim world in the 10th–15th centuries.

The title was also adopted by the Armenians (Armenian: սպարապետ, [a]sparapet) and the Georgians (Georgian: სპასპეტი, spaspeti), as well as Khotan (spāta) and the Sogdians (spʾdpt) in Central Asia. It is also attested in Greek sources as aspabedēs (ἀσπαβέδης). The title was revived in the 20th century by the Pahlavi dynasty, in the Modern Persian form sepahbod (سپهبد), equivalent to a three-star Lieutenant General, ranking below arteshbod (full General).

Sulayman ibn Abd al-Malik ibn Marwan (c. 675 – 24 September 717) was the seventh Umayyad caliph, ruling from 715 until his death. He was the son of Caliph Abd al-Malik and Wallada bint al-Abbas. He began his career as governor of Palestine, while his father Abd al-Malik (r. 685–705) and brother al-Walid I (r. 705–715) reigned as caliphs. There, the theologian Raja ibn Haywa mentored him, and he forged close ties with Yazid ibn al-Muhallab, a major opponent of al-Hajjaj ibn Yusuf, al-Walid's powerful viceroy of Iraq and the eastern Caliphate. Sulayman resented al-Hajjaj's influence over his brother. As governor, Sulayman founded the city of Ramla and built the White Mosque in it. The new city superseded Lydda as the district capital of Palestine. Lydda was at least partly destroyed and its inhabitants may have been forcibly relocated to Ramla, which developed into an economic hub, became home to many Muslim scholars, and remained the commercial and administrative center of Palestine until the 11th century.

After acceding as caliph, Sulayman dismissed his predecessor's governors and generals. Many had been handpicked by al-Hajjaj and had led the war efforts which brought the Caliphate to its greatest territorial extent. Among them were the conqueror of Transoxiana (Central Asia), Qutayba ibn Muslim, who was killed by his own troops in an abortive revolt in anticipation of his dismissal, and the conqueror of Sind (the western Indian subcontinent), Muhammad ibn al-Qasim, who was executed. In the west, Sulayman deposed Musa ibn Nusayr, the conqueror of the Iberian Peninsula (al-Andalus) and governor of Ifriqiya (central North Africa), and had his son Abd al-Aziz, governor of al-Andalus, assassinated. Although he continued his predecessors' militarist policies, expansion largely stopped under Sulayman, partly due to effective resistance along the Central Asian frontiers and the collapse of Arab military leadership and organization there after Qutayba's death. Sulayman's appointee over the eastern Caliphate, his confidant Yazid, invaded the southern Caspian coast in 716, but withdrew and settled for a tributary arrangement after being defeated by the local Iranian rulers. Sulayman intensified the war with the Byzantine Empire, the primary focus of his war efforts, culminating in the 717–718 siege of Constantinople, which ended in a disastrous Arab defeat.

Alid dynasties of northern Iran or Alavids (Persian: علویان طبرستان). In the 9th–10th centuries, the northern Iranian regions of Tabaristan, Daylam and Gilan, sandwiched between the Caspian Sea and the Alborz range, came under the rule of a number of Alid dynasties, espousing the Zaydi branch of Shia Islam.

The first and most powerful Zaydi emirate was established in Tabaristan in 864 and lasted until 928. It was interrupted by Samanid occupation in 900, but restored in 914 by another Alid branch.