Steel was not used by the Nubian.
The answer is #2 the cells specialize hoped this helped
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The description most likely tells that it would be the siege of Yorktown, so your answer would be D. Yorktown
In the Northern british colony life was mostly depending on trade and manufacturing because farming was out of the picture.
In the Middle british colony life was mostly depending on ship building and harbors because of the great access to the water.
In the Southern british colonies life was mostly depending on farming because the soil in the south was rich and great for crops.
The development that probably hurt it is the reduction of open range herding. In history, people could just let their cattle roam freely and find food since the plains were huge and nobody lived in them. Nowadays, this can be problematic because there are more and more people and settlements and roads with cars so free range herding has been drastically reduced which cost the herders a lot.