Why are the Prairies called granary of the world?

a.    One of the famous waterfalls between Canada and USA.
        - Niagara falls.
b.    The largest mountain range in North America.
        - Rocky mountains.
c.    The largest peak of North America.
        - Mt. McKinley.
d.    Canal that separates north & South America.
        - Grand...

North America is the 3rd largest continent that extends from tropical zone to frigid to zone. It is divided into three divisions in term of physical features viz the western mountain, eastern highlands and central lowland. Rocky mountain range extends from north to south in the western part of north America where climate is cool and dry. There are old and low lands in the eastern side. And there is low and plain lands between western...

There is great diversity in climate and vegetation of north America. The southern and central part of prairies is hot as the northern part is very cold. Central plains remain very hot during summer and cold during winter. It rain throughout the year in western part of Canada and around St, Lawrence river. The southern part of USA is highly influenced by hurricanes. The south-western part is dry and there are some deserts. In northern part...

The parts of north America affected by natural calamities are:
        - Southern part of USA. (hurricane)
        - Around St. Lawrence river. (flood/landslide)

McKinley            ----------> Mountain
Mississippi        ----------> River
Niagara              ----------> Falls
Superior             ----------> Lake
Panama             ----------> Gorge
Grand Canyon   ----------> Canal

The Grand Banks of Newfound land in the Atlantic ocean and the adjoining coast of the Pacific ocean are the major fishing areas. The prairies is famous for the production of wheat, maize, etc. Cotton is produced around the Gulf of Mexico. Tobacco is produced in eastern coastal area and the Appalachian region of USA.

We know, about 49% of total land area of Canada is covered by coniferous forest. Large number of paper industries are being run by using the raw materials obtained from the forest. It is also exporting forests products. Also many mineral based industries are running as mining is one of main occupation here. Extraction of coal, natural oil, and gas is done extensively done here. Hence, these are the economic activities of Canada.

We know, must parts of Canada and US lies in central lowland of America where plenty of grasslands are found. These grasslands are favorable for the rearing of both herbivores and omnivores animals. Animal husbandry is most suitable occupation here. So, animal rearing has developed on large scale in Canada and in US.

There are diverse economic activities carried by the people of north America. The western mountains are covered by dense coniferous forest. So, paper industries, forest products, lumbering and also mining is done here. Many, mineral based industries are running. Agriculture, floriculture, horticulture and animal husbandry is practiced widely here. Fishing and tourism are also the major economic activities of north America.

The eastern part of Canada and US are more developed than the western part because: 
        - More fertile land and cultivable land is in eastern side but rocky land in western side.
        - Direct sea route for international trade in eastern part but not in western part.
        - Favorable whether with adequate rainfall in eastern side for agriculture but not in...