Final answer:
King Ezana ruled Aksum when it reached its peak around 350 CE, marked by successful military campaigns, Christianization, and significant economic and cultural achievements.
Step-by-step explanation:
Peak of Aksum under King Ezana
The Kingdom of Aksum reached its peak around 350 CE under the rule of King Ezana. During his reign, King Ezana conducted successful military campaigns and oversaw the Christianization of Aksum. His rule is marked by the construction of obelisks, the introduction of Christian symbols on coinage, and the expansion of trade, notably the silk trade with China established by his predecessor Kaleb. King Ezana's era was the height of Aksum's power, exemplified by its influence extending as far as southern Arabia, and its economic strength highlighted by the bustling port city of Adulis.
Aksum's influence during this period was considerable, controlling territories across the Red Sea, engaging in international commerce, and expanding its military reach. Despite the later decline following Kaleb's reign due to overextension, climatic shifts, and economic hardships, the historical significance of Aksum under King Ezana's rule remains prominent, known for its monolithic stelae, unique coinage, written script Ge'ez, and the Christianization of the empire.