Who is wilbur zelinsky and what did he do

Wilbur Zelinsky was an American cultural geographer. He was most recently a professor emeritus at Pennsylvania State University. He also created the Zelinsky Model of Demographic Transition.

Wilber Zelinsky was an American cultural geographer. he also created the Zelinsky Model of Demographic Transition.

Answer the zagros mountains, stretch across western iran and are located next to the khuzestan plain; answer( zagros mountains

Ansarabs took control;