The project D. Building the Transcontinental I believe is the one that led to the creation of a system of time zones across America
This metalwork sculpture is an example of Buddhist art in Nepal.
B. Buddhist art in Nepal.
Since we don't have the available answers, let's see what were the <u>main causes</u> of the Dust Bowl devastation:
I) Mechanization of agricultural operations. Because of World War I efforts food production had to grow which increased wheat prices. This caused an enormous increase in the size of farms and in the rhythm and size of their crops that weren't accompanied by adequate care of the soil.
II) Farming in the Great Plains. Because of several federal land acts since the 19th century, many farmers were settling in the plains believing rain would come once farming started. This and the belief in Manifest Destiny made people farm in regions where irrigation couldn't reach.
III) The Great Depression. In order to compensate for the decreasing wheat prices, farmers tried to plow up even more land and harvest bigger crops. This led to the plowing of native grassland that kept the soil stable.
IV) Drought. In 1931 started a drought caused by a lack of rain that would end only in 1939. This killed the crops and left the soil exposed. Without grassland and with the winds the soil was blown away in dust storms.
The Agricultural Revolution was a result of increased labor and agricultural productivity. This, in turn, resulted to the increase in output of food supply faster than the increase in population. Since there were more food available, more people chose to live away from farms and do other jobs that contributed the industrial revolution.
