Respuesta :

His greatest impact in history is that he established a firm Spanish presence in the New World after conquering the Aztec capital of Tenochtitlan.

Answer:

One effect is that he established a firm Spanish presence in the New World after conquering the Aztec capital of Tenochtitlan.

Explanation:

His greatest impact in history is that he established a firm Spanish presence in the New World after conquering the Aztec capital of Tenochtitlan.