D. US naval blockade of Cuba
Answer:
Slaves and crops.
Explanation:
The more land they had the more crops they could grow. The more crops they grew the more slaves they needed.
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Charles Martel was the Frankish ruler where he defeated the Islamic Umayyads and saved Europe
In The Social Contract (1762) Rousseau argues that laws are binding only when they are supported by the general will of the people. His famous idea, 'man is born free, but he is everywhere in chains' challenged the traditional order of society.