Why would nomads raising cattle on dry grasslands want to migrate into South Asia

Explanation :phuntsok Dorje makes a living raising yaks and other livestock on the vast alpine grasslands that ... says Tibet's climate is the most sensitive in Asia and influences the globe. ... but residents say their economy has dried up along with the nearby wetlands.

the most famous of all the units fighting in cuba, the "rough riders" was the name given to the first u.s. volunteer cavalry under the leadership of theodore roosevelt. roosevelt resigned his position as assistant secretary of the navy in may 1898 to join the volunteer cavalry. the original plan for this unit called for filling it with men from the indian territory, new mexico, arizona, and oklahoma. however, once roosevelt joined the group, it quickly became the place for a mix of troops ranging from ivy league athletes to glee-club singers to texas rangers and indians.