Rome and Carthage became enemies because of power. They each wanted control of trade and resources.
I believe it is the last and second one.
Marx and Engels begin The Communist Manifesto with "A spectre is haunting Europe" because they wanted to warn the bourgeoisie and the elite class that their movement is strong and it is not going to stop until Europe is classless. Literary effect: the movement is mainstream. Political effect: the movement is powerful.
Answer:
Cortez and his men allied with neighboring tribes that also shared a hatred and dislike for the Aztecs. They besieged the aztec capital for around 90 days and with their superb weaponry and new disease called smallpox they were able to capture the Aztec capital Tenochtitlán.
Explanation: