Why is the geography of The Kite Runner important? What ways did all of the characters travel during the book for any reason?

In the book The Kite Runnergeography
plays an important role. The book opens with Amir living in San
Francisco.  He has lived there for awhile with his father, but he
receives a call from an old friend.  He then begins to think back on his
childhood.

The boy Amir begins his youth living in
Kabul,
Afghanistan.  He grows up with a  father who
has a comfortable amount of money and can afford a nice home and even to help build an
orphanage.  However, the country Afghanistan has been through a lot of government
turmoil and this is reflected in the book.

Amir and his
father visit relatives in Jalalabad, Afghanistan.  Where he wakes up in the night and
states out loud "I saw Hassan raped, " but no one hears
him.

After the country was becoming dangerous between the
Russians and the Afghani’s Amir and Baba fled.  They initially went to Mahipar and from
there to Jalalabad.  They traveled to Pagahan.  Then they go to
Peshwar; Pakahastan.

Eventually they move to San
Franciscowhere they begin a new life, but Amir has to return to his homeland.  He
returns to Kaka Kahn in Peshwar and then ahs to go with a driver back o Kabul to try
 and rescue Sohrab, Hassan's son.