Question: Which city of the sea linked to another sea that Theodoric was trying to gain access to by attacking Narbo Martius was the main port of Axum?

Knowledge 1: Theodoric I
Because the Romans had to fight against the Franks, who plundered Cologne and Trier in 435, and because of other events Theodoric saw the chance to conquer Narbo Martius (in 436) to obtain access to the Mediterranean Sea and the roads to the Pyrenees. But Litorius, with the aid of the Huns, prevented the capture of the city and drove the Visigoths back to their capital Tolosa. Theodoric's offer of peace was refused, but the king won the decisive battle at Tolosa, and Litorius soon died in Gothic imprisonment from the injuries which he had received in this battle. Avitus went – according to the orders of Aëtius – to Tolosa and offered a peace treaty which Theodoric accepted. Perhaps the Romans recognized at that time the sovereignty of the Visigoth state. [SEP] Knowledge 2: Kingdom of Aksum
Aksum is mentioned in the 1st - century AD Periplus of the Erythraean Sea as an important market place for ivory, which was exported throughout the ancient world. It states that the ruler of Aksum in the 1st century AD was Zoskales, who, besides ruling the kingdom, likewise controlled land near the Red Sea: Adulis (near Massawa) and lands through the highlands of present - day Eritrea. He is also said to have been familiar with Greek literature. [SEP] Knowledge 3: Red Sea
The Red Sea (also the Erythraean Sea) is a seawater inlet of the Indian Ocean, lying between Africa and Asia. The connection to the ocean is in the south through the Bab el Mandeb strait and the Gulf of Aden. To the north lie the Sinai Peninsula, the Gulf of Aqaba, and the Gulf of Suez (leading to the Suez Canal). The Red Sea is a Global 200 ecoregion. The sea is underlain by the Red Sea Rift which is part of the Great Rift Valley.
Knowledge 1: Theodoric I
Because the Romans had to fight against the Franks, who plundered Cologne and Trier in 435, and because of other events Theodoric saw the chance to conquer Narbo Martius (in 436) to obtain access to the Mediterranean Sea and the roads to the Pyrenees. But Litorius, with the aid of the Huns, prevented the capture of the city and drove the Visigoths back to their capital Tolosa. Theodoric's offer of peace was refused, but the king won the decisive battle at Tolosa, and Litorius soon died in Gothic imprisonment from the injuries which he had received in this battle. Avitus went – according to the orders of Aëtius – to Tolosa and offered a peace treaty which Theodoric accepted. Perhaps the Romans recognized at that time the sovereignty of the Visigoth state. [SEP] Knowledge 2: British Empire
In 1869 the Suez Canal opened under Napoleon III, linking the Mediterranean with the Indian Ocean. Initially the Canal was opposed by the British; but once opened, its strategic value was quickly recognised and became the "jugular vein of the Empire". In 1875, the Conservative government of Benjamin Disraeli bought the indebted Egyptian ruler Isma'il Pasha's 44 percent shareholding in the Suez Canal for £4 million (£340 million in 2013). Although this did not grant outright control of the strategic waterway, it did give Britain leverage. Joint Anglo-French financial control over Egypt ended in outright British occupation in 1882. The French were still majority shareholders and attempted to weaken the British position, but a compromise was reached with the 1888 Convention of Constantinople, which made the Canal officially neutral territory. [SEP] Knowledge 3: Gamal Abdel Nasser
France and the UK, the largest shareholders in the Suez Canal Company, saw its nationalization as yet another hostile measure aimed at them by the Egyptian government. Nasser was aware that the canal's nationalization would instigate an international crisis and believed the prospect of military intervention by the two countries was 80 per cent likely. He believed, however, that the UK would not be able to intervene militarily for at least two months after the announcement, and dismissed Israeli action as "impossible". In early October, the UN Security Council met on the matter of the canal's nationalization and adopted a resolution recognizing Egypt's right to control the canal as long as it continued to allow passage through it for foreign ships. According to Heikal, after this agreement, "Nasser estimated that the danger of invasion had dropped to 10 per cent". Shortly thereafter, however, the UK, France, and Israel made a secret agreement to take over the Suez Canal, occupy the Suez Canal zone, and topple Nasser.
Knowledge 1: Theodoric I
Because the Romans had to fight against the Franks, who plundered Cologne and Trier in 435, and because of other events Theodoric saw the chance to conquer Narbo Martius (in 436) to obtain access to the Mediterranean Sea and the roads to the Pyrenees. But Litorius, with the aid of the Huns, prevented the capture of the city and drove the Visigoths back to their capital Tolosa. Theodoric's offer of peace was refused, but the king won the decisive battle at Tolosa, and Litorius soon died in Gothic imprisonment from the injuries which he had received in this battle. Avitus went – according to the orders of Aëtius – to Tolosa and offered a peace treaty which Theodoric accepted. Perhaps the Romans recognized at that time the sovereignty of the Visigoth state. [SEP] Knowledge 2: British Empire
In 1869 the Suez Canal opened under Napoleon III, linking the Mediterranean with the Indian Ocean. Initially the Canal was opposed by the British; but once opened, its strategic value was quickly recognised and became the "jugular vein of the Empire". In 1875, the Conservative government of Benjamin Disraeli bought the indebted Egyptian ruler Isma'il Pasha's 44 percent shareholding in the Suez Canal for £4 million (£340 million in 2013). Although this did not grant outright control of the strategic waterway, it did give Britain leverage. Joint Anglo-French financial control over Egypt ended in outright British occupation in 1882. The French were still majority shareholders and attempted to weaken the British position, but a compromise was reached with the 1888 Convention of Constantinople, which made the Canal officially neutral territory. [SEP] Knowledge 3: Suez Canal
The Suez Canal (Arabic: قناة السويس ‎ qanāt as - suwēs) is an artificial sea - level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez. Constructed by the Suez Canal Company between 1859 and 1869, it was officially opened on 17 November 1869. The canal offers watercraft a shorter journey between the North Atlantic and northern Indian Oceans via the Mediterranean and Red seas by avoiding the South Atlantic and southern Indian oceans, in turn reducing the journey by approximately 7,000 kilometres (4,300 mi). It extends from the northern terminus of Port Said to the southern terminus of Port Tewfik at the city of Suez. Its length is 193.30 km (120.11 mi), including its northern and southern access channels. In 2012, 17,225 vessels traversed the canal (average 47 per day).

Answer: Adulis