D. To lay the foundations for a world government that would replace existing nation-states and their militaries.
The first one is right the other two I am not sure about.
Before the Agriculture Revolution, many people lived in rural areas because they could grow food on small areas of land. They only grew crops for home consumption and never to sell since the land was to small. The children are the ones who milked the cows, churned the butter, and tended to the farm animals. Since the land was so small, they ate mostly rye bread and porridge. There was little meat to eat since they needed the cows for milk and butter. The correct answer is A.
It provided a link between the atlantic ocean and the great lakes
