<Ul> <Li> the southern portions of the Canadian provinces of Alberta, Manitoba and Saskatchewan . </Li> </Ul> <Li> the southern portions of the Canadian provinces of Alberta, Manitoba and Saskatchewan . </Li> <P> The region is known for supporting extensive cattle ranching and dry farming . </P> <P> The Canadian portion of the Plains is known as the Prairies . It covers much of Alberta and southern Saskatchewan, and a narrow band of southern Manitoba . Despite covering a relatively small geographic area, the Prairies are nevertheless home to the majority of each of the three provinces' respective populations . </P>

What is most of the land on the great plains dedicated to