Answer:
Option C, the closing of the western frontier, is the right answer.
Explanation:
An argument that claimed that American democracy was established by the American frontier came to be known as the Frontier Thesis. This argument was presented by historian Frederick Jackson Turner in the year 1893. He argued that the primary result of the American frontier was American democracy along with a lower interest in high culture, violence and egalitarianism.
Answer: A series of rebellions in the outer areas.
Explanation:
The Dust Bowl, which happened during the 1930´s originated in the South and its devastation and effects moved on to affect not just the Southern Plains but also the Great Plains. The absence of rainfall, the intense movement of strong winds and continuous dust were part of the factors that affected everything in life, from the economy of families to their welfare and even comfort, to their health. It was a time of great drought, which coupled with the Depression of the 1930s, increased the poverty levels, especially in rural areas. In response to the need for food and income to be generated, many farmers decided to replace the natural grasses that grew in the plains for winter wheat and this action, coupled with the lack of rainfall, led to a furthering of the drought problem and also to land erosion. In the end, it was very difficult, if not almost impossible, to grow any crops and the lands turned to dust. This is why the correct response is C: Replacing natural grasses to plant winter wheat led to topsoil erosion.
Cotton<span> spinning using Richard Arkwright's water frame, James ..... together within one building to work on machinery that they </span>did<span> not own. .</span>