H Hannah L Guest Oct 7, 2008 #1 ...invasions from north east and west? what barrier protected this civilization from invasions from their enemies
...invasions from north east and west? what barrier protected this civilization from invasions from their enemies
H Hydrophilic Guest Oct 7, 2008 #2 The Himalayas mountain range, aparently Karakorum and Hindukush are subsets of the Himalayas.
