Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Aksum' has mentioned 'Trade' in the following places:
Occurrence Sentence Text Source
It is believed the empire began a long and slow decline after the 7th century due partly to the Persians and then the Arabs contesting old Red Sea trade routes.
Eventually the empire was cut off from its principal markets in Alexandria, Byzantium and Southern Europe and its share of trade captured by Arab traders of the era.
Its decline in population and trade then contributed to the shift of the power hub of the Ethiopian Empire south to the Agaw region as it moved further inland.
In command of the ivory trade with Sudan, its fleets controlled the Red Sea trade through the port of Adulis and the inland routes of north eastern Africa.