One Important Difference Between the Empires of Mesoamerica and Those

One important difference between the empires of Mesoamerica and those of Afroeurasia is that

A) the states of Mesoamerica relied heavily on cavalry to carry out military campaigns, while Afroeurasian states relied solely on the ability of soldiers to move on foot.
B) Mesoamerican states tended to incorporate new territories through marriage alliances, while Afroeurasian rulers used military conquest as their primary means of expansion.
C) Afroeurasian rulers sought to impose their cultures on their conquered populations, while Mesoamericans welcomed diversity.
D) Afroeurasians used cavalry and transport animals to expand their empires, while Mesoamericans relied on armies on foot.