The heart of the Piedmont is the valley of the Po river, south of which intenisve agriculture is conducted. These low lands produce rice, wheat, milk and fruits. In the hills the production of wines is favoured by the weather, including the "Barbera" and "Asti" varieties .
Totalitarianism is a political system or a form of government that prohibits opposition parties, restricts individual opposition to the state and its claims, and exercises an extremely high degree of control over public and private life. It is regarded as the most extreme and complete form of authoritarianism.
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D is your answer. it gives a more specific answer than the other choices, plus it is true. Slavery has been around since Jesus time, so that's way longer than the 1500s