Zafar, Yemen in the context of "Riyadh"

The Kingdom of Aksum, or the Aksumite Empire, was a kingdom in East Africa and South Arabia from classical antiquity to the Middle Ages, based in what is now northern Ethiopia and Eritrea, and spanning present-day Djibouti and Sudan. Emerging from the earlier Dʿmt civilization, the kingdom was founded in the first century. The city of Axum served as the kingdom's capital for many centuries until it relocated to Kubar in the ninth century due to declining trade connections and recurring invasions.

The Kingdom of Aksum was considered one of the four great powers of the third century by Mani, the one who started the Manichean movement, alongside Persia, Rome, and China. Aksum continued to expand under the reign of Gedara (c. 200–230), who was the first king to be involved in South Arabian affairs. His reign resulted in the control of much of western Yemen, such as the Tihama, Najran, al-Ma'afir, Zafar (until c. 230), and parts of Hashid territory around Hamir in the northern highlands until a joint Himyarite-Sabean alliance pushed them out. Aksum-Himyar conflicts persisted throughout the third century. During the reign of Endybis (270–310), Aksum began minting coins that have been excavated as far away as Caesarea and southern India.

Himyar was a polity in the southern highlands of Yemen, as well as the name of the region which it claimed. Until 110 BCE, it was integrated into the Qatabanian kingdom, afterwards being recognized as an independent kingdom. According to classical sources, their capital was the ancient city of Zafar, relatively near the modern-day city of Sana'a. Himyarite power eventually shifted to Sana'a as the population increased in the fifth century. After the establishment of their kingdom, it was ruled by kings from dhū-Raydān tribe. The kingdom was named Raydān.

The kingdom conquered neighbouring Saba' in c. 25 BCE (for the first time), Qataban in c. 200 CE, and Haḍramaut c. 300 CE. Its political fortunes relative to Saba' changed frequently until it finally conquered the Sabaean Kingdom around 280. With successive invasion and Arabization, the kingdom collapsed in the early sixth century, as the Kingdom of Aksum conquered it in 530 CE. Thereafter Himyar was ruled by vassal rulers until its annexation as a province by the Sasanian Empire in 575 or 578.

The Kingdom of Aksum, or the Aksumite Empire, was a kingdom in East Africa and South Arabia from classical antiquity to the Middle Ages, based in what is now northern Ethiopia and Eritrea, and spanning present-day Djibouti, Sudan, and Yemen. Emerging from the earlier Dʿmt civilization, the kingdom was founded in the 1st century. The city of Axum served as the kingdom's capital for many centuries until it relocated to Kubar in the 9th century due to declining trade connections and recurring invasions.

The Kingdom of Aksum was considered one of the four great powers of the 3rd century by Mani, the founder of Manichaeism, alongside Persia, Rome, and China. Aksum continued to expand under the reign of Gedara (c. 200–230), who was the first king to be involved in South Arabian affairs. His reign resulted in the control of much of western Yemen, such as the Tihama, Najran, al-Ma'afir, Zafar (until c. 230), and parts of Hashid territory around Hamir in the northern highlands until a joint Himyarite-Sabean alliance pushed them out. Aksum-Himyar conflicts persisted throughout the 3rd century. During the reign of Endybis (270–310), Aksum began minting coins that have been excavated as far away as Caesarea and southern India.

Qatabānian (or Qatabānic), one of the four better-documented languages of the Old South Arabian (or "Ṣayhadic") sub-group of South Semitic, was spoken mainly but not exclusively in the kingdom of Qatabān, located in central Yemen. The language is attested between 500 BC and 200 AD. Some two thousand inscriptions are known and written in the Ancient South Arabian Monumental Script, known as Musnad. These inscriptions are mainly found in Wādī Bayhān and Wādī Ḥārib to the south-east of Ma'rib, and from the plateau to the south of that area. Qatabanian inscriptions increase after the beginning of the 4th century BC when the Sabaeans ceased to dominate the area, and Qatabān became an independent kingdom.

Qatabanian was spoken in an area across the kingdom of Qatabān as far as Jabal al-'Awd (near Zafar) in the southwest, and if we are to believe the Greek and Latin writers, it went as far as Bāb al-Mandab on the Red Sea. At the end of the 2nd century AD, Saba' and Ḥaḑramawt finally defeated Qatabān, and the inscriptions ended.