Ramlat al-Sab'atayn in the context of Dune

Ma'in (Minaean: 𐩣𐩲𐩬; Arabic: معين, romanized: Maʿīn) was an ancient South Arabian kingdom in modern-day Yemen. It was located along the strip of desert called Ṣayhad by medieval Arab geographers, which is now known as Ramlat al-Sab'atayn. Wadd was the national god of Ma'in. The spoken language was Minaic. The kingdom appears in the historical record in the 8th century BCE, and transition from a city-state to kingdom in the last quarter of the 7th century BCE. The date of the end of Ma'in is heavily disputed, but the most popular hypothesis places its demise in the 1st century CE.

The Minaean people were one of four ancient Yemeni groups mentioned by Eratosthenes. The others were the Sabaeans, Ḥaḑramites and Qatabānians. Each of these had regional kingdoms in ancient Yemen, with the Minaeans in the north-west (in Wādī al-Jawf), the Sabaeans to the south-east of them, the Qatabānians to the south-east of the Sabaeans, and the Ḥaḑramites further east still.

The ancient history of Yemen or South Arabia is especially important as one of the oldest centers of civilization in the Near East. Its relatively fertile land and adequate rainfall in a moister climate helped sustain a stable population, a feature recognized by the ancient Greek geographer Ptolemy, who described Yemen as Eudaimon Arabia (better known in its Latin translation, Arabia Felix) meaning Fortunate Arabia or Happy Arabia. Between the eighth century BCE and the sixth century CE, it was dominated by six main states which rivaled each other, or were allied with each other and controlled the lucrative spice trade: Saba', Ma'īn, Qatabān, Hadhramaut, Kingdom of Awsan, and the Himyarite Kingdom. Islam arrived in 630 CE and Yemen became part of the Muslim realm.

The centers of the Old South Arabian kingdoms of present-day Yemen lay around the desert area called Ramlat al-Sab'atayn, known to medieval Arab geographers as Ṣayhad. The southern and western Highlands and the coastal region were less influential politically. The coastal cities were however already very important from the beginning for trade. Apart from the territory of modern Yemen, the kingdoms extended into Oman, as far as the north Arabian oasis of Lihyan (also called Dedan), to Eritrea, and even along coastal East Africa to what is now Tanzania.

Ma'in (Minaean: 𐩣𐩲𐩬; Arabic: معين, romanized: Maʿīn) was an ancient South Arabian kingdom in modern-day Yemen. It was located along the strip of desert called Ṣayhad by medieval Arab geographers, which is now known as Ramlat al-Sab'atayn. Wadd was the national god of Ma'in. The spoken language was Minaic. The kingdom appears in the historical record in the 8th century BCE, and transition from a city-state to kingdom in the last quarter of the 7th century BCE. The date of the end of Ma'in is heavily disputed, but the most popular hypothesis places its demise in the 1st century CE.

The Minaean people were one of four ancient Yemeni groups mentioned by Eratosthenes. The others were the Sabaeans, Ḥaḍramites and Qatabānians. Each of these had regional kingdoms in ancient Yemen, with the Minaeans in the north-west (in Wādī al-Jawf), the Sabaeans to the south-east of them, the Qatabānians to the south-east of the Sabaeans, and the Ḥaḑramites further east still.