Final answer:
Queen Dido was encouraged by her sister Anna to marry the Trojan prince Aeneas to strengthen Carthage, according to the historical and mythological texts.
Step-by-step explanation:
In the historical and mythological texts, the individual encouraged by her sister Anna to marry the Trojan prince Aeneas on the grounds that it would strengthen Carthage is Queen Dido. According to the Aeneid, an epic Latin poem written by Virgil, this event is a crucial part of the story. Anna, Dido's sister believed that this marriage would ensure the stability and power of Carthage against its rivals. However, the tragic consequences of this union are iconic in literature and ancient history.
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